diff --git a/package-lock.json b/package-lock.json
index 56699d8..1b37f0d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -432,6 +432,23 @@
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+    "available-typed-arrays": {
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+      "resolved": "https://registry.npmjs.org/available-typed-arrays/-/available-typed-arrays-1.0.2.tgz",
+      "integrity": "sha512-XWX3OX8Onv97LMk/ftVyBibpGwY5a8SmuxZPzeOxqmuEqUCOM9ZE+uIaD1VNJ5QnvU2UQusvmKbuM1FR8QWGfQ==",
+      "dev": true,
+      "requires": {
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+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/array-filter/-/array-filter-1.0.0.tgz",
+          "integrity": "sha1-uveeYubvTCpMC4MSMtr/7CUfnYM=",
+          "dev": true
+        }
+      }
+    },
     "aws-sign2": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
@@ -2376,6 +2393,42 @@
         "object-assign": "4.1.1"
       }
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+    "cross-env": {
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+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-5.2.1.tgz",
+      "integrity": "sha512-1yHhtcfAd1r4nwQgknowuUNfIT9E8dOMMspC36g45dN+iD1blloi7xp8X/xAIDnjHWyt1uQ8PHk2fkNaym7soQ==",
+      "dev": true,
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+          "dev": true,
+          "requires": {
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+            "path-key": "^2.0.1",
+            "semver": "^5.5.0",
+            "shebang-command": "^1.2.0",
+            "which": "^1.2.9"
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+        "path-key": {
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+          "resolved": "https://registry.npmjs.org/path-key/-/path-key-2.0.1.tgz",
+          "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=",
+          "dev": true
+        },
+        "semver": {
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+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+          "dev": true
+        }
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       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-5.1.0.tgz",
@@ -2586,7 +2639,7 @@
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-        "esprima": "git://github.com/ariya/esprima.git#a65a3eb93b9a5dce9a1184ca2d1bd0b184c6b8fd",
+        "esprima": "esprima@git://github.com/ariya/esprima.git#a65a3eb93b9a5dce9a1184ca2d1bd0b184c6b8fd",
         "simple-fmt": "0.1.0",
         "simple-is": "0.2.0",
         "stringmap": "0.2.2",
@@ -2597,6 +2650,7 @@
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+          "from": "esprima@git://github.com/ariya/esprima.git#a65a3eb93b9a5dce9a1184ca2d1bd0b184c6b8fd",
           "dev": true
         }
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@@ -2876,6 +2930,15 @@
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       }
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+    "dotignore": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/dotignore/-/dotignore-0.1.2.tgz",
+      "integrity": "sha512-UGGGWfSauusaVJC+8fgV+NVvBXkCTmVv7sk6nojDZZvuOUNGUy0Zk4UpHQD6EDjS0jpBwcACvH4eofvyzBcRDw==",
+      "dev": true,
+      "requires": {
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+      }
+    },
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       "resolved": "https://registry.npmjs.org/du/-/du-0.1.0.tgz",
@@ -3090,6 +3153,110 @@
         "is-regex": "1.0.4"
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+    "es-get-iterator": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/es-get-iterator/-/es-get-iterator-1.1.0.tgz",
+      "integrity": "sha512-UfrmHuWQlNMTs35e1ypnvikg6jCz3SK8v8ImvmDsh36fCVUR1MqoFDiyn0/k52C8NqO3YsO8Oe0azeesNuqSsQ==",
+      "dev": true,
+      "requires": {
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+        "has-symbols": "^1.0.1",
+        "is-arguments": "^1.0.4",
+        "is-map": "^2.0.1",
+        "is-set": "^2.0.1",
+        "is-string": "^1.0.5",
+        "isarray": "^2.0.5"
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+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.5.tgz",
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+          "dev": true,
+          "requires": {
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+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.1.5",
+            "is-regex": "^1.0.5",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimleft": "^2.1.1",
+            "string.prototype.trimright": "^2.1.1"
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+        "es-to-primitive": {
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+          "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
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+          "dev": true,
+          "requires": {
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+            "is-date-object": "^1.0.1",
+            "is-symbol": "^1.0.2"
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+          "dev": true,
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+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.5.tgz",
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+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.0.5.tgz",
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+          "dev": true,
+          "requires": {
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+        "is-symbol": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.3.tgz",
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+          "dev": true,
+          "requires": {
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+        "isarray": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-2.0.5.tgz",
+          "integrity": "sha512-xHjhDr3cNBK0BzdUJSPXZntQUx/mwMS5Rw4A7lPJ90XGAO6ISP/ePDNuo0vhqOZU+UD5JoodwCAAoZQd3FeAKw==",
+          "dev": true
+        },
+        "object-keys": {
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+          "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
+          "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==",
+          "dev": true
+        },
+        "object.assign": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/object.assign/-/object.assign-4.1.0.tgz",
+          "integrity": "sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==",
+          "dev": true,
+          "requires": {
+            "define-properties": "^1.1.2",
+            "function-bind": "^1.1.1",
+            "has-symbols": "^1.0.0",
+            "object-keys": "^1.0.11"
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     "es-to-primitive": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.1.1.tgz",
@@ -3878,7 +4045,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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@@ -3929,7 +4097,8 @@
         "balanced-match": {
           "version": "0.4.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "bcrypt-pbkdf": {
           "version": "1.0.1",
@@ -3944,6 +4113,7 @@
           "version": "0.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "inherits": "2.0.3"
           }
@@ -3952,6 +4122,7 @@
           "version": "2.10.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -3960,6 +4131,7 @@
           "version": "1.1.7",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "0.4.2",
             "concat-map": "0.0.1"
@@ -3968,7 +4140,8 @@
         "buffer-shims": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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@@ -3985,12 +4158,14 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "combined-stream": {
           "version": "1.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3998,22 +4173,26 @@
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "core-util-is": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "cryptiles": {
           "version": "2.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -4053,7 +4232,8 @@
         "delayed-stream": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4085,7 +4265,8 @@
         "extsprintf": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4107,12 +4288,14 @@
         "fs.realpath": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "fstream": {
           "version": "1.0.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "graceful-fs": "4.1.11",
             "inherits": "2.0.3",
@@ -4168,6 +4351,7 @@
           "version": "7.1.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "1.0.0",
             "inflight": "1.0.6",
@@ -4180,7 +4364,8 @@
         "graceful-fs": {
           "version": "4.1.11",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.0.5",
@@ -4208,6 +4393,7 @@
           "version": "3.1.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1",
             "cryptiles": "2.0.5",
@@ -4218,7 +4404,8 @@
         "hoek": {
           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "http-signature": {
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@@ -4235,6 +4422,7 @@
           "version": "1.0.6",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "once": "1.4.0",
             "wrappy": "1.0.2"
@@ -4243,7 +4431,8 @@
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           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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           "version": "1.3.4",
@@ -4255,6 +4444,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -4268,7 +4458,8 @@
         "isarray": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4341,12 +4532,14 @@
         "mime-db": {
           "version": "1.27.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "mime-types": {
           "version": "2.1.15",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -4355,6 +4548,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4362,12 +4556,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -4422,7 +4618,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "oauth-sign": {
           "version": "0.8.2",
@@ -4440,6 +4637,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4469,7 +4667,8 @@
         "path-is-absolute": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -4480,7 +4679,8 @@
         "process-nextick-args": {
           "version": "1.0.7",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -4518,6 +4718,7 @@
           "version": "2.2.9",
           "bundled": true,
           "dev": true,
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@@ -4562,6 +4763,7 @@
           "version": "2.6.1",
           "bundled": true,
           "dev": true,
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           "requires": {
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@@ -4569,7 +4771,8 @@
         "safe-buffer": {
           "version": "5.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "5.3.0",
@@ -4593,6 +4796,7 @@
           "version": "1.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -4626,6 +4830,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4636,6 +4841,7 @@
           "version": "1.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -4650,6 +4856,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -4664,6 +4871,7 @@
           "version": "2.2.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "fstream": "1.0.11",
@@ -4719,7 +4927,8 @@
         "util-deprecate": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "uuid": {
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@@ -4748,7 +4957,8 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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     },
@@ -5059,6 +5269,12 @@
       "integrity": "sha1-6CB68cx7MNRGzHC3NLXovhj4jVE=",
       "dev": true
     },
+    "has-symbols": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
+      "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/hash-base/-/hash-base-2.0.2.tgz",
@@ -6250,12 +6466,24 @@
         "is-decimal": "1.0.1"
       }
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+    "is-arguments": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/is-arguments/-/is-arguments-1.0.4.tgz",
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diff --git a/package.json b/package.json
index 52cec6f..6076cf4 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
     "tap-closer": "^1.0.0",
     "tap-dev-tool": "^1.3.0",
     "tap-spec": "^4.1.1",
-    "tape": "^4.6.0",
+    "tape": "^5.0.0",
     "watchify": "^3.7.0"
   },
   "peerDependencies": {