diff --git a/package.json b/package.json
index a62a16cf29..8b579cdd22 100644
--- a/package.json
+++ b/package.json
@@ -76,7 +76,7 @@
     "markdown-loader": "3.0.0",
     "markdownlint-cli": "0.13.0",
     "mini-css-extract-plugin": "0.4.2",
-    "optimize-css-assets-webpack-plugin": "4.0.3",
+    "optimize-css-assets-webpack-plugin": "5.0.1",
     "prettier": "1.14.2",
     "prettier-package-json": "2.0.0",
     "react": "16.4.2",
diff --git a/utils/build/webpack.base.js b/utils/build/webpack.base.js
index 97605b7fd3..12adcf726d 100644
--- a/utils/build/webpack.base.js
+++ b/utils/build/webpack.base.js
@@ -19,10 +19,16 @@ const options = {
   optimization: {
     minimizer: [
       new OptimizeCSSAssetsPlugin({
-        cssProcessorOptions: {
-          discardComments: { removeAllButFirst: true },
-          reduceIdents: false,
-          zindex: false
+        cssProcessorPluginOptions: {
+          preset: [
+            'default',
+            {
+              cssDeclarationSorter: false,
+              discardComments: {
+                removeAllButFirst: true
+              }
+            }
+          ]
         }
       })
     ]
diff --git a/yarn.lock b/yarn.lock
index 2624222b92..4d971e6a9c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1075,7 +1075,7 @@ align-text@^0.1.1, align-text@^0.1.3:
     longest "^1.0.1"
     repeat-string "^1.5.2"
 
-alphanum-sort@^1.0.1, alphanum-sort@^1.0.2:
+alphanum-sort@^1.0.0, alphanum-sort@^1.0.1, alphanum-sort@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/alphanum-sort/-/alphanum-sort-1.0.2.tgz#97a1119649b211ad33691d9f9f486a8ec9fbe0a3"
 
@@ -2488,7 +2488,7 @@ bonjour@^3.5.0:
     multicast-dns "^6.0.1"
     multicast-dns-service-types "^1.1.0"
 
-boolbase@~1.0.0:
+boolbase@^1.0.0, boolbase@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/boolbase/-/boolbase-1.0.0.tgz#68dff5fbe60c51eb37725ea9e3ed310dcc1e776e"
 
@@ -2596,6 +2596,14 @@ browserslist@^1.3.6, browserslist@^1.5.2, browserslist@^1.7.6:
     caniuse-db "^1.0.30000639"
     electron-to-chromium "^1.2.7"
 
+browserslist@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.1.0.tgz#81cbb8e52dfa09918f93c6e051d779cb7360785d"
+  dependencies:
+    caniuse-lite "^1.0.30000878"
+    electron-to-chromium "^1.3.61"
+    node-releases "^1.0.0-alpha.11"
+
 browserslist@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.0.1.tgz#61c05ce2a5843c7d96166408bc23d58b5416e818"
@@ -2790,10 +2798,23 @@ caniuse-api@^1.5.2:
     lodash.memoize "^4.1.2"
     lodash.uniq "^4.5.0"
 
+caniuse-api@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/caniuse-api/-/caniuse-api-3.0.0.tgz#5e4d90e2274961d46291997df599e3ed008ee4c0"
+  dependencies:
+    browserslist "^4.0.0"
+    caniuse-lite "^1.0.0"
+    lodash.memoize "^4.1.2"
+    lodash.uniq "^4.5.0"
+
 caniuse-db@^1.0.30000529, caniuse-db@^1.0.30000634, caniuse-db@^1.0.30000639:
   version "1.0.30000871"
   resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000871.tgz#f1995c1fe31892649a7605957a80c92518423d4d"
 
+caniuse-lite@^1.0.0, caniuse-lite@^1.0.30000878:
+  version "1.0.30000882"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000882.tgz#0d5066847a11a5af0e50ffce6c062ef0665f68ea"
+
 caniuse-lite@^1.0.30000865:
   version "1.0.30000865"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000865.tgz#70026616e8afe6e1442f8bb4e1092987d81a2f25"
@@ -3040,6 +3061,12 @@ coa@~1.0.1:
   dependencies:
     q "^1.1.2"
 
+coa@~2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/coa/-/coa-2.0.1.tgz#f3f8b0b15073e35d70263fb1042cb2c023db38af"
+  dependencies:
+    q "^1.1.2"
+
 code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
@@ -3065,11 +3092,17 @@ color-convert@^1.3.0, color-convert@^1.9.0:
   dependencies:
     color-name "1.1.1"
 
+color-convert@^1.9.1:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  dependencies:
+    color-name "1.1.3"
+
 color-name@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.1.tgz#4b1415304cf50028ea81643643bd82ea05803689"
 
-color-name@^1.0.0:
+color-name@1.1.3, color-name@^1.0.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
 
@@ -3079,6 +3112,13 @@ color-string@^0.3.0:
   dependencies:
     color-name "^1.0.0"
 
+color-string@^1.5.2:
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/color-string/-/color-string-1.5.3.tgz#c9bbc5f01b58b5492f3d6857459cb6590ce204cc"
+  dependencies:
+    color-name "^1.0.0"
+    simple-swizzle "^0.2.2"
+
 color@^0.11.0:
   version "0.11.4"
   resolved "https://registry.yarnpkg.com/color/-/color-0.11.4.tgz#6d7b5c74fb65e841cd48792ad1ed5e07b904d764"
@@ -3087,6 +3127,13 @@ color@^0.11.0:
     color-convert "^1.3.0"
     color-string "^0.3.0"
 
+color@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/color/-/color-3.0.0.tgz#d920b4328d534a3ac8295d68f7bd4ba6c427be9a"
+  dependencies:
+    color-convert "^1.9.1"
+    color-string "^1.5.2"
+
 colormin@^1.0.5:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/colormin/-/colormin-1.1.2.tgz#ea2f7420a72b96881a38aae59ec124a6f7298133"
@@ -3485,10 +3532,17 @@ css-color-keywords@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/css-color-keywords/-/css-color-keywords-1.0.0.tgz#fea2616dc676b2962686b3af8dbdbe180b244e05"
 
-css-color-names@0.0.4:
+css-color-names@0.0.4, css-color-names@^0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/css-color-names/-/css-color-names-0.0.4.tgz#808adc2e79cf84738069b646cb20ec27beb629e0"
 
+css-declaration-sorter@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/css-declaration-sorter/-/css-declaration-sorter-3.0.1.tgz#d0e3056b0fd88dc1ea9dceff435adbe9c702a7f8"
+  dependencies:
+    postcss "^6.0.0"
+    timsort "^0.3.0"
+
 css-initials@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/css-initials/-/css-initials-0.2.0.tgz#14c225bd8656255a6baee07231ef82fa55aacaa3"
@@ -3512,6 +3566,10 @@ css-loader@^0.28.11:
     postcss-value-parser "^3.3.0"
     source-list-map "^2.0.0"
 
+css-select-base-adapter@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/css-select-base-adapter/-/css-select-base-adapter-0.1.0.tgz#0102b3d14630df86c3eb9fa9f5456270106cf990"
+
 css-select@^1.1.0, css-select@~1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/css-select/-/css-select-1.2.0.tgz#2b3a110539c5355f1cd8d314623e870b121ec858"
@@ -3521,6 +3579,15 @@ css-select@^1.1.0, css-select@~1.2.0:
     domutils "1.5.1"
     nth-check "~1.0.1"
 
+css-select@~1.3.0-rc0:
+  version "1.3.0-rc0"
+  resolved "https://registry.yarnpkg.com/css-select/-/css-select-1.3.0-rc0.tgz#6f93196aaae737666ea1036a8cb14a8fcb7a9231"
+  dependencies:
+    boolbase "^1.0.0"
+    css-what "2.1"
+    domutils "1.5.1"
+    nth-check "^1.0.1"
+
 css-selector-tokenizer@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/css-selector-tokenizer/-/css-selector-tokenizer-0.7.0.tgz#e6988474ae8c953477bf5e7efecfceccd9cf4c86"
@@ -3537,6 +3604,28 @@ css-to-react-native@^2.0.3:
     fbjs "^0.8.5"
     postcss-value-parser "^3.3.0"
 
+css-tree@1.0.0-alpha.29:
+  version "1.0.0-alpha.29"
+  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0-alpha.29.tgz#3fa9d4ef3142cbd1c301e7664c1f352bd82f5a39"
+  dependencies:
+    mdn-data "~1.1.0"
+    source-map "^0.5.3"
+
+css-tree@1.0.0-alpha25:
+  version "1.0.0-alpha25"
+  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0-alpha25.tgz#1bbfabfbf6eeef4f01d9108ff2edd0be2fe35597"
+  dependencies:
+    mdn-data "^1.0.0"
+    source-map "^0.5.3"
+
+css-unit-converter@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/css-unit-converter/-/css-unit-converter-1.1.1.tgz#d9b9281adcfd8ced935bdbaba83786897f64e996"
+
+css-url-regex@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/css-url-regex/-/css-url-regex-1.1.0.tgz#83834230cc9f74c457de59eebd1543feeb83b7ec"
+
 css-what@2.1:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.0.tgz#9467d032c38cfaefb9f2d79501253062f87fa1bd"
@@ -3563,6 +3652,59 @@ cssesc@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/cssesc/-/cssesc-0.1.0.tgz#c814903e45623371a0477b40109aaafbeeaddbb4"
 
+cssnano-preset-default@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-preset-default/-/cssnano-preset-default-4.0.0.tgz#c334287b4f7d49fb2d170a92f9214655788e3b6b"
+  dependencies:
+    css-declaration-sorter "^3.0.0"
+    cssnano-util-raw-cache "^4.0.0"
+    postcss "^6.0.0"
+    postcss-calc "^6.0.0"
+    postcss-colormin "^4.0.0"
+    postcss-convert-values "^4.0.0"
+    postcss-discard-comments "^4.0.0"
+    postcss-discard-duplicates "^4.0.0"
+    postcss-discard-empty "^4.0.0"
+    postcss-discard-overridden "^4.0.0"
+    postcss-merge-longhand "^4.0.0"
+    postcss-merge-rules "^4.0.0"
+    postcss-minify-font-values "^4.0.0"
+    postcss-minify-gradients "^4.0.0"
+    postcss-minify-params "^4.0.0"
+    postcss-minify-selectors "^4.0.0"
+    postcss-normalize-charset "^4.0.0"
+    postcss-normalize-display-values "^4.0.0"
+    postcss-normalize-positions "^4.0.0"
+    postcss-normalize-repeat-style "^4.0.0"
+    postcss-normalize-string "^4.0.0"
+    postcss-normalize-timing-functions "^4.0.0"
+    postcss-normalize-unicode "^4.0.0"
+    postcss-normalize-url "^4.0.0"
+    postcss-normalize-whitespace "^4.0.0"
+    postcss-ordered-values "^4.0.0"
+    postcss-reduce-initial "^4.0.0"
+    postcss-reduce-transforms "^4.0.0"
+    postcss-svgo "^4.0.0"
+    postcss-unique-selectors "^4.0.0"
+
+cssnano-util-get-arguments@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-get-arguments/-/cssnano-util-get-arguments-4.0.0.tgz#ed3a08299f21d75741b20f3b81f194ed49cc150f"
+
+cssnano-util-get-match@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-get-match/-/cssnano-util-get-match-4.0.0.tgz#c0e4ca07f5386bb17ec5e52250b4f5961365156d"
+
+cssnano-util-raw-cache@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-raw-cache/-/cssnano-util-raw-cache-4.0.0.tgz#be0a2856e25f185f5f7a2bcc0624e28b7f179a9f"
+  dependencies:
+    postcss "^6.0.0"
+
+cssnano-util-same-parent@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-same-parent/-/cssnano-util-same-parent-4.0.0.tgz#d2a3de1039aa98bc4ec25001fa050330c2a16dac"
+
 cssnano@^3.10.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-3.10.0.tgz#4f38f6cea2b9b17fa01490f23f1dc68ea65c1c38"
@@ -3600,6 +3742,21 @@ cssnano@^3.10.0:
     postcss-value-parser "^3.2.3"
     postcss-zindex "^2.0.1"
 
+cssnano@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-4.1.0.tgz#682c37b84b9b7df616450a5a8dc9269b9bd10734"
+  dependencies:
+    cosmiconfig "^5.0.0"
+    cssnano-preset-default "^4.0.0"
+    is-resolvable "^1.0.0"
+    postcss "^6.0.0"
+
+csso@^3.5.0:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/csso/-/csso-3.5.1.tgz#7b9eb8be61628973c1b261e169d2f024008e758b"
+  dependencies:
+    css-tree "1.0.0-alpha.29"
+
 csso@~2.3.1:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/csso/-/csso-2.3.2.tgz#ddd52c587033f49e94b71fc55569f252e8ff5f85"
@@ -4024,6 +4181,10 @@ electron-to-chromium@^1.2.7, electron-to-chromium@^1.3.52:
   version "1.3.52"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.52.tgz#d2d9f1270ba4a3b967b831c40ef71fb4d9ab5ce0"
 
+electron-to-chromium@^1.3.61:
+  version "1.3.62"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.62.tgz#2e8e2dc070c800ec8ce23ff9dfcceb585d6f9ed8"
+
 elliptic@^6.0.0:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
@@ -5384,7 +5545,7 @@ has-values@^1.0.0:
     is-number "^3.0.0"
     kind-of "^4.0.0"
 
-has@^1.0.1, has@^1.0.3:
+has@^1.0.0, has@^1.0.1, has@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
   dependencies:
@@ -5433,6 +5594,10 @@ helper-md@^0.2.2:
     fs-exists-sync "^0.1.0"
     remarkable "^1.6.2"
 
+hex-color-regex@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/hex-color-regex/-/hex-color-regex-1.1.0.tgz#4c06fccb4602fe2602b3c93df82d7e7dbf1a8a8e"
+
 highlight.js@^9.12.0:
   version "9.12.0"
   resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.12.0.tgz#e6d9dbe57cbefe60751f02af336195870c90c01e"
@@ -5475,6 +5640,14 @@ hpack.js@^2.1.6:
     readable-stream "^2.0.1"
     wbuf "^1.1.0"
 
+hsl-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/hsl-regex/-/hsl-regex-1.0.0.tgz#d49330c789ed819e276a4c0d272dffa30b18fe6e"
+
+hsla-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/hsla-regex/-/hsla-regex-1.0.0.tgz#c1ce7a3168c8c6614033a4b5f7877f3b225f9c38"
+
 html-comment-regex@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/html-comment-regex/-/html-comment-regex-1.1.1.tgz#668b93776eaae55ebde8f3ad464b307a4963625e"
@@ -5927,6 +6100,10 @@ is-arrayish@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
 
+is-arrayish@^0.3.1:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.3.2.tgz#4574a2ae56f7ab206896fb431eaeed066fdf8f03"
+
 is-binary-path@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-1.0.1.tgz#75f16642b480f187a711c814161fd3a4a7655898"
@@ -5957,6 +6134,17 @@ is-ci@^1.0.10, is-ci@^1.1.0:
   dependencies:
     ci-info "^1.0.0"
 
+is-color-stop@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-color-stop/-/is-color-stop-1.1.0.tgz#cfff471aee4dd5c9e158598fbe12967b5cdad345"
+  dependencies:
+    css-color-names "^0.0.4"
+    hex-color-regex "^1.1.0"
+    hsl-regex "^1.0.0"
+    hsla-regex "^1.0.0"
+    rgb-regex "^1.0.1"
+    rgba-regex "^1.0.0"
+
 is-data-descriptor@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
@@ -6155,7 +6343,7 @@ is-regexp@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-regexp/-/is-regexp-1.0.0.tgz#fd2d883545c46bac5a633e7b9a09e87fa2cb5069"
 
-is-resolvable@^1.1.0:
+is-resolvable@^1.0.0, is-resolvable@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-resolvable/-/is-resolvable-1.1.0.tgz#fb18f87ce1feb925169c9a407c19318a3206ed88"
 
@@ -6191,6 +6379,12 @@ is-svg@^2.0.0:
   dependencies:
     html-comment-regex "^1.1.0"
 
+is-svg@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-svg/-/is-svg-3.0.0.tgz#9321dbd29c212e5ca99c4fa9794c714bcafa2f75"
+  dependencies:
+    html-comment-regex "^1.1.0"
+
 is-symbol@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.1.tgz#3cc59f00025194b6ab2e38dbae6689256b660572"
@@ -6697,6 +6891,13 @@ js-yaml@^3.11.0, js-yaml@^3.7.0, js-yaml@^3.9.0:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@~3.10.0:
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 js-yaml@~3.11.0:
   version "3.11.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.11.0.tgz#597c1a8bd57152f26d622ce4117851a51f5ebaef"
@@ -7368,6 +7569,14 @@ mdast-util-compact@^1.0.0:
     unist-util-modify-children "^1.0.0"
     unist-util-visit "^1.1.0"
 
+mdn-data@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-1.2.0.tgz#eadd28b0f2d307cf27e71524609bfb749ebfc0b6"
+
+mdn-data@~1.1.0:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-1.1.4.tgz#50b5d4ffc4575276573c4eedb8780812a8419f01"
+
 mdurl@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mdurl/-/mdurl-1.0.1.tgz#fe85b2ec75a59037f2adfec100fd6c601761152e"
@@ -7873,6 +8082,12 @@ node-releases@^1.0.0-alpha.10:
   dependencies:
     semver "^5.3.0"
 
+node-releases@^1.0.0-alpha.11:
+  version "1.0.0-alpha.11"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.0.0-alpha.11.tgz#73c810acc2e5b741a17ddfbb39dfca9ab9359d8a"
+  dependencies:
+    semver "^5.3.0"
+
 nomnom@~1.6.2:
   version "1.6.2"
   resolved "https://registry.yarnpkg.com/nomnom/-/nomnom-1.6.2.tgz#84a66a260174408fc5b77a18f888eccc44fb6971"
@@ -7925,6 +8140,10 @@ normalize-url@^1.0.0, normalize-url@^1.4.0:
     query-string "^4.1.0"
     sort-keys "^1.0.0"
 
+normalize-url@^3.0.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-3.2.0.tgz#98d0948afc82829f374320f405fe9ca55a5f8567"
+
 npm-bundled@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/npm-bundled/-/npm-bundled-1.0.3.tgz#7e71703d973af3370a9591bafe3a63aca0be2308"
@@ -7990,7 +8209,7 @@ npm-run-path@^2.0.0:
     gauge "~2.7.3"
     set-blocking "~2.0.0"
 
-nth-check@~1.0.1:
+nth-check@^1.0.1, nth-check@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/nth-check/-/nth-check-1.0.1.tgz#9929acdf628fc2c41098deab82ac580cf149aae4"
   dependencies:
@@ -8142,11 +8361,11 @@ optimist@^0.6.1:
     minimist "~0.0.1"
     wordwrap "~0.0.2"
 
-optimize-css-assets-webpack-plugin@4.0.3:
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/optimize-css-assets-webpack-plugin/-/optimize-css-assets-webpack-plugin-4.0.3.tgz#4f714e276b279700892c4a6202b7e22812d6f683"
+optimize-css-assets-webpack-plugin@5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/optimize-css-assets-webpack-plugin/-/optimize-css-assets-webpack-plugin-5.0.1.tgz#9eb500711d35165b45e7fd60ba2df40cb3eb9159"
   dependencies:
-    cssnano "^3.10.0"
+    cssnano "^4.1.0"
     last-call-webpack-plugin "^3.0.0"
 
 optionator@^0.8.1, optionator@^0.8.2:
@@ -8539,6 +8758,15 @@ postcss-calc@^5.2.0:
     postcss-message-helpers "^2.0.0"
     reduce-css-calc "^1.2.6"
 
+postcss-calc@^6.0.0:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-calc/-/postcss-calc-6.0.1.tgz#3d24171bbf6e7629d422a436ebfe6dd9511f4330"
+  dependencies:
+    css-unit-converter "^1.1.1"
+    postcss "^6.0.0"
+    postcss-selector-parser "^2.2.2"
+    reduce-css-calc "^2.0.0"
+
 postcss-colormin@^2.1.8:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/postcss-colormin/-/postcss-colormin-2.2.2.tgz#6631417d5f0e909a3d7ec26b24c8a8d1e4f96e4b"
@@ -8547,6 +8775,16 @@ postcss-colormin@^2.1.8:
     postcss "^5.0.13"
     postcss-value-parser "^3.2.3"
 
+postcss-colormin@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-colormin/-/postcss-colormin-4.0.1.tgz#6f1c18a0155bc69613f2ff13843e2e4ae8ff0bbe"
+  dependencies:
+    browserslist "^4.0.0"
+    color "^3.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-convert-values@^2.3.4:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/postcss-convert-values/-/postcss-convert-values-2.6.1.tgz#bbd8593c5c1fd2e3d1c322bb925dcae8dae4d62d"
@@ -8554,30 +8792,61 @@ postcss-convert-values@^2.3.4:
     postcss "^5.0.11"
     postcss-value-parser "^3.1.2"
 
+postcss-convert-values@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-convert-values/-/postcss-convert-values-4.0.0.tgz#77d77d9aed1dc4e6956e651cc349d53305876f62"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-discard-comments@^2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/postcss-discard-comments/-/postcss-discard-comments-2.0.4.tgz#befe89fafd5b3dace5ccce51b76b81514be00e3d"
   dependencies:
     postcss "^5.0.14"
 
+postcss-discard-comments@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-comments/-/postcss-discard-comments-4.0.0.tgz#9684a299e76b3e93263ef8fd2adbf1a1c08fd88d"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-duplicates@^2.0.1:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/postcss-discard-duplicates/-/postcss-discard-duplicates-2.1.0.tgz#b9abf27b88ac188158a5eb12abcae20263b91932"
   dependencies:
     postcss "^5.0.4"
 
+postcss-discard-duplicates@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-duplicates/-/postcss-discard-duplicates-4.0.0.tgz#42f3c267f85fa909e042c35767ecfd65cb2bd72c"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-empty@^2.0.1:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/postcss-discard-empty/-/postcss-discard-empty-2.1.0.tgz#d2b4bd9d5ced5ebd8dcade7640c7d7cd7f4f92b5"
   dependencies:
     postcss "^5.0.14"
 
+postcss-discard-empty@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-empty/-/postcss-discard-empty-4.0.0.tgz#55e18a59c74128e38c7d2804bcfa4056611fb97f"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-overridden@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/postcss-discard-overridden/-/postcss-discard-overridden-0.1.1.tgz#8b1eaf554f686fb288cd874c55667b0aa3668d58"
   dependencies:
     postcss "^5.0.16"
 
+postcss-discard-overridden@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-overridden/-/postcss-discard-overridden-4.0.0.tgz#4a0bf85978784cf1f81ed2c1c1fd9d964a1da1fa"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-unused@^2.2.1:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/postcss-discard-unused/-/postcss-discard-unused-2.2.3.tgz#bce30b2cc591ffc634322b5fb3464b6d934f4433"
@@ -8636,6 +8905,15 @@ postcss-merge-longhand@^2.0.1:
   dependencies:
     postcss "^5.0.4"
 
+postcss-merge-longhand@^4.0.0:
+  version "4.0.5"
+  resolved "https://registry.yarnpkg.com/postcss-merge-longhand/-/postcss-merge-longhand-4.0.5.tgz#00898d72347fc7e40bb564b11bdc08119c599b59"
+  dependencies:
+    css-color-names "0.0.4"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+    stylehacks "^4.0.0"
+
 postcss-merge-rules@^2.0.3:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/postcss-merge-rules/-/postcss-merge-rules-2.1.2.tgz#d1df5dfaa7b1acc3be553f0e9e10e87c61b5f721"
@@ -8646,6 +8924,17 @@ postcss-merge-rules@^2.0.3:
     postcss-selector-parser "^2.2.2"
     vendors "^1.0.0"
 
+postcss-merge-rules@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-merge-rules/-/postcss-merge-rules-4.0.1.tgz#430fd59b3f2ed2e8afcd0b31278eda39854abb10"
+  dependencies:
+    browserslist "^4.0.0"
+    caniuse-api "^3.0.0"
+    cssnano-util-same-parent "^4.0.0"
+    postcss "^6.0.0"
+    postcss-selector-parser "^3.0.0"
+    vendors "^1.0.0"
+
 postcss-message-helpers@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/postcss-message-helpers/-/postcss-message-helpers-2.0.0.tgz#a4f2f4fab6e4fe002f0aed000478cdf52f9ba60e"
@@ -8658,6 +8947,13 @@ postcss-minify-font-values@^1.0.2:
     postcss "^5.0.4"
     postcss-value-parser "^3.0.2"
 
+postcss-minify-font-values@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-font-values/-/postcss-minify-font-values-4.0.0.tgz#4cc33d283d6a81759036e757ef981d92cbd85bed"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-minify-gradients@^1.0.1:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/postcss-minify-gradients/-/postcss-minify-gradients-1.0.5.tgz#5dbda11373703f83cfb4a3ea3881d8d75ff5e6e1"
@@ -8665,6 +8961,15 @@ postcss-minify-gradients@^1.0.1:
     postcss "^5.0.12"
     postcss-value-parser "^3.3.0"
 
+postcss-minify-gradients@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-gradients/-/postcss-minify-gradients-4.0.0.tgz#3fc3916439d27a9bb8066db7cdad801650eb090e"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    is-color-stop "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-minify-params@^1.0.4:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/postcss-minify-params/-/postcss-minify-params-1.2.2.tgz#ad2ce071373b943b3d930a3fa59a358c28d6f1f3"
@@ -8674,6 +8979,16 @@ postcss-minify-params@^1.0.4:
     postcss-value-parser "^3.0.2"
     uniqs "^2.0.0"
 
+postcss-minify-params@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-params/-/postcss-minify-params-4.0.0.tgz#05e9166ee48c05af651989ce84d39c1b4d790674"
+  dependencies:
+    alphanum-sort "^1.0.0"
+    cssnano-util-get-arguments "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+    uniqs "^2.0.0"
+
 postcss-minify-selectors@^2.0.4:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/postcss-minify-selectors/-/postcss-minify-selectors-2.1.1.tgz#b2c6a98c0072cf91b932d1a496508114311735bf"
@@ -8683,6 +8998,15 @@ postcss-minify-selectors@^2.0.4:
     postcss "^5.0.14"
     postcss-selector-parser "^2.0.0"
 
+postcss-minify-selectors@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-selectors/-/postcss-minify-selectors-4.0.0.tgz#b1e9f6c463416d3fcdcb26e7b785d95f61578aad"
+  dependencies:
+    alphanum-sort "^1.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-selector-parser "^3.0.0"
+
 postcss-modules-extract-imports@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/postcss-modules-extract-imports/-/postcss-modules-extract-imports-1.2.0.tgz#66140ecece38ef06bf0d3e355d69bf59d141ea85"
@@ -8716,6 +9040,61 @@ postcss-normalize-charset@^1.1.0:
   dependencies:
     postcss "^5.0.5"
 
+postcss-normalize-charset@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-charset/-/postcss-normalize-charset-4.0.0.tgz#24527292702d5e8129eafa3d1de49ed51a6ab730"
+  dependencies:
+    postcss "^6.0.0"
+
+postcss-normalize-display-values@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-display-values/-/postcss-normalize-display-values-4.0.0.tgz#950e0c7be3445770a160fffd6b6644c3c0cd8f89"
+  dependencies:
+    cssnano-util-get-match "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-positions@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-positions/-/postcss-normalize-positions-4.0.0.tgz#ee9343ab981b822c63ab72615ecccd08564445a3"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-repeat-style@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-repeat-style/-/postcss-normalize-repeat-style-4.0.0.tgz#b711c592cf16faf9ff575e42fa100b6799083eff"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    cssnano-util-get-match "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-string@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-string/-/postcss-normalize-string-4.0.0.tgz#718cb6d30a6fac6ac6a830e32c06c07dbc66fe5d"
+  dependencies:
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-timing-functions@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-timing-functions/-/postcss-normalize-timing-functions-4.0.0.tgz#0351f29886aa981d43d91b2c2bd1aea6d0af6d23"
+  dependencies:
+    cssnano-util-get-match "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-unicode@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-unicode/-/postcss-normalize-unicode-4.0.0.tgz#5acd5d47baea5d17674b2ccc4ae5166fa88cdf97"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-normalize-url@^3.0.7:
   version "3.0.8"
   resolved "https://registry.yarnpkg.com/postcss-normalize-url/-/postcss-normalize-url-3.0.8.tgz#108f74b3f2fcdaf891a2ffa3ea4592279fc78222"
@@ -8725,6 +9104,22 @@ postcss-normalize-url@^3.0.7:
     postcss "^5.0.14"
     postcss-value-parser "^3.2.3"
 
+postcss-normalize-url@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-url/-/postcss-normalize-url-4.0.0.tgz#b7a9c8ad26cf26694c146eb2d68bd0cf49956f0d"
+  dependencies:
+    is-absolute-url "^2.0.0"
+    normalize-url "^3.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-whitespace@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-whitespace/-/postcss-normalize-whitespace-4.0.0.tgz#1da7e76b10ae63c11827fa04fc3bb4a1efe99cc0"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-ordered-values@^2.1.0:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/postcss-ordered-values/-/postcss-ordered-values-2.2.3.tgz#eec6c2a67b6c412a8db2042e77fe8da43f95c11d"
@@ -8732,6 +9127,14 @@ postcss-ordered-values@^2.1.0:
     postcss "^5.0.4"
     postcss-value-parser "^3.0.1"
 
+postcss-ordered-values@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/postcss-ordered-values/-/postcss-ordered-values-4.1.0.tgz#2c769d5d44aa3c7c907b8be2e997ed19dfd8d50a"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-reduce-idents@^2.2.2:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/postcss-reduce-idents/-/postcss-reduce-idents-2.4.0.tgz#c2c6d20cc958284f6abfbe63f7609bf409059ad3"
@@ -8745,6 +9148,15 @@ postcss-reduce-initial@^1.0.0:
   dependencies:
     postcss "^5.0.4"
 
+postcss-reduce-initial@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-reduce-initial/-/postcss-reduce-initial-4.0.1.tgz#f2d58f50cea2b0c5dc1278d6ea5ed0ff5829c293"
+  dependencies:
+    browserslist "^4.0.0"
+    caniuse-api "^3.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+
 postcss-reduce-transforms@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/postcss-reduce-transforms/-/postcss-reduce-transforms-1.0.4.tgz#ff76f4d8212437b31c298a42d2e1444025771ae1"
@@ -8753,6 +9165,15 @@ postcss-reduce-transforms@^1.0.3:
     postcss "^5.0.8"
     postcss-value-parser "^3.0.1"
 
+postcss-reduce-transforms@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-reduce-transforms/-/postcss-reduce-transforms-4.0.0.tgz#f645fc7440c35274f40de8104e14ad7163edf188"
+  dependencies:
+    cssnano-util-get-match "^4.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-reporter@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/postcss-reporter/-/postcss-reporter-5.0.0.tgz#a14177fd1342829d291653f2786efd67110332c3"
@@ -8793,7 +9214,7 @@ postcss-selector-parser@^2.0.0, postcss-selector-parser@^2.2.2:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-postcss-selector-parser@^3.1.0:
+postcss-selector-parser@^3.0.0, postcss-selector-parser@^3.1.0:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-3.1.1.tgz#4f875f4afb0c96573d5cf4d74011aee250a7e865"
   dependencies:
@@ -8821,6 +9242,15 @@ postcss-svgo@^2.1.1:
     postcss-value-parser "^3.2.3"
     svgo "^0.7.0"
 
+postcss-svgo@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-svgo/-/postcss-svgo-4.0.0.tgz#c0bbad02520fc636c9d78b0e8403e2e515c32285"
+  dependencies:
+    is-svg "^3.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+    svgo "^1.0.0"
+
 postcss-syntax@^0.33.0:
   version "0.33.0"
   resolved "https://registry.yarnpkg.com/postcss-syntax/-/postcss-syntax-0.33.0.tgz#59c0c678d2f9ecefa84c6ce9ef46fc805c54ab3a"
@@ -8833,7 +9263,15 @@ postcss-unique-selectors@^2.0.2:
     postcss "^5.0.4"
     uniqs "^2.0.0"
 
-postcss-value-parser@^3.0.1, postcss-value-parser@^3.0.2, postcss-value-parser@^3.1.1, postcss-value-parser@^3.1.2, postcss-value-parser@^3.2.3, postcss-value-parser@^3.3.0:
+postcss-unique-selectors@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-unique-selectors/-/postcss-unique-selectors-4.0.0.tgz#04c1e9764c75874261303402c41f0e9769fc5501"
+  dependencies:
+    alphanum-sort "^1.0.0"
+    postcss "^6.0.0"
+    uniqs "^2.0.0"
+
+postcss-value-parser@^3.0.0, postcss-value-parser@^3.0.1, postcss-value-parser@^3.0.2, postcss-value-parser@^3.1.1, postcss-value-parser@^3.1.2, postcss-value-parser@^3.2.3, postcss-value-parser@^3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-3.3.0.tgz#87f38f9f18f774a4ab4c8a232f5c5ce8872a9d15"
 
@@ -8862,7 +9300,7 @@ postcss@^5.0.10, postcss@^5.0.11, postcss@^5.0.12, postcss@^5.0.13, postcss@^5.0
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
-postcss@^6.0.1, postcss@^6.0.14, postcss@^6.0.8:
+postcss@^6.0.0, postcss@^6.0.1, postcss@^6.0.14, postcss@^6.0.8:
   version "6.0.23"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-6.0.23.tgz#61c82cc328ac60e677645f979054eb98bc0e3324"
   dependencies:
@@ -9504,6 +9942,13 @@ reduce-css-calc@^1.2.6:
     math-expression-evaluator "^1.2.14"
     reduce-function-call "^1.0.1"
 
+reduce-css-calc@^2.0.0:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/reduce-css-calc/-/reduce-css-calc-2.1.4.tgz#c20e9cda8445ad73d4ff4bea960c6f8353791708"
+  dependencies:
+    css-unit-converter "^1.1.1"
+    postcss-value-parser "^3.3.0"
+
 reduce-function-call@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/reduce-function-call/-/reduce-function-call-1.0.2.tgz#5a200bf92e0e37751752fe45b0ab330fd4b6be99"
@@ -9810,6 +10255,14 @@ retry@^0.10.0:
   version "0.10.1"
   resolved "https://registry.yarnpkg.com/retry/-/retry-0.10.1.tgz#e76388d217992c252750241d3d3956fed98d8ff4"
 
+rgb-regex@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/rgb-regex/-/rgb-regex-1.0.1.tgz#c0e0d6882df0e23be254a475e8edd41915feaeb1"
+
+rgba-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/rgba-regex/-/rgba-regex-1.0.0.tgz#43374e2e2ca0968b0ef1523460b7d730ff22eeb3"
+
 right-align@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/right-align/-/right-align-0.1.3.tgz#61339b722fe6a3515689210d24e14c96148613ef"
@@ -9915,7 +10368,7 @@ sane@^2.0.0:
   optionalDependencies:
     fsevents "^1.2.3"
 
-sax@>=0.6.0, sax@^1.2.4, sax@~1.2.1:
+sax@>=0.6.0, sax@^1.2.4, sax@~1.2.1, sax@~1.2.4:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
@@ -10087,6 +10540,12 @@ simple-git@1.96.0:
   dependencies:
     debug "^3.1.0"
 
+simple-swizzle@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/simple-swizzle/-/simple-swizzle-0.2.2.tgz#a4da6b635ffcccca33f70d17cb92592de95e557a"
+  dependencies:
+    is-arrayish "^0.3.1"
+
 sisteransi@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/sisteransi/-/sisteransi-0.1.1.tgz#5431447d5f7d1675aac667ccd0b865a4994cb3ce"
@@ -10362,6 +10821,10 @@ ssri@^6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/ssri/-/ssri-6.0.0.tgz#fc21bfc90e03275ac3e23d5a42e38b8a1cbc130d"
 
+stable@~0.1.6:
+  version "0.1.8"
+  resolved "https://registry.yarnpkg.com/stable/-/stable-0.1.8.tgz#836eb3c8382fe2936feaf544631017ce7d47a3cf"
+
 stack-utils@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.1.tgz#d4f33ab54e8e38778b0ca5cfd3b3afb12db68620"
@@ -10569,6 +11032,14 @@ styled-components@3.4.5:
     stylis-rule-sheet "^0.0.10"
     supports-color "^3.2.3"
 
+stylehacks@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/stylehacks/-/stylehacks-4.0.0.tgz#64b323951c4a24e5fc7b2ec06c137bf32d155e8a"
+  dependencies:
+    browserslist "^4.0.0"
+    postcss "^6.0.0"
+    postcss-selector-parser "^3.0.0"
+
 stylelint-config-styled-components@0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/stylelint-config-styled-components/-/stylelint-config-styled-components-0.1.1.tgz#b408388d7c687833ab4be4c4e6522d97d2827ede"
@@ -10700,6 +11171,25 @@ svgo@^0.7.0, svgo@^0.7.2:
     sax "~1.2.1"
     whet.extend "~0.9.9"
 
+svgo@^1.0.0:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/svgo/-/svgo-1.0.5.tgz#7040364c062a0538abacff4401cea6a26a7a389a"
+  dependencies:
+    coa "~2.0.1"
+    colors "~1.1.2"
+    css-select "~1.3.0-rc0"
+    css-select-base-adapter "~0.1.0"
+    css-tree "1.0.0-alpha25"
+    css-url-regex "^1.1.0"
+    csso "^3.5.0"
+    js-yaml "~3.10.0"
+    mkdirp "~0.5.1"
+    object.values "^1.0.4"
+    sax "~1.2.4"
+    stable "~0.1.6"
+    unquote "~1.1.1"
+    util.promisify "~1.0.0"
+
 symbol-observable@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
@@ -10825,6 +11315,10 @@ timers-browserify@^2.0.4:
   dependencies:
     setimmediate "^1.0.4"
 
+timsort@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/timsort/-/timsort-0.3.0.tgz#405411a8e7e6339fe64db9a234de11dc31e02bd4"
+
 tmp@^0.0.33:
   version "0.0.33"
   resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
@@ -11168,7 +11662,7 @@ unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
 
-unquote@^1.1.0:
+unquote@^1.1.0, unquote@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/unquote/-/unquote-1.1.1.tgz#8fded7324ec6e88a0ff8b905e7c098cdc086d544"
 
@@ -11223,7 +11717,7 @@ util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
 
-util.promisify@1.0.0, util.promisify@^1.0.0:
+util.promisify@1.0.0, util.promisify@^1.0.0, util.promisify@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/util.promisify/-/util.promisify-1.0.0.tgz#440f7165a459c9a16dc145eb8e72f35687097030"
   dependencies: