Fix to allow li outside of lists

Closes GH-18.
Closes GH-19.

Reviewed-by: Titus Wormer <[email protected]>

Author: snikitin-qtl

Diff for: lib/github.json

@@ -8,10 +8,6 @@
     "id"
   ],
   "ancestors": {
-    "li": [
-      "ol",
-      "ul"
-    ],
     "tbody": [
       "table"
     ],
@@ -60,8 +56,6 @@
     "h4",
     "h5",
     "h6",
-    "h7",
-    "h8",
     "br",
     "b",
     "i",

Diff for: test.js

@@ -448,10 +448,11 @@ test('sanitize()', function (t) {
     })
 
     st.test('`li`', function (sst) {
+
       sst.deepEqual(
         sanitize(h('li', 'alert(1)')),
-        u('text', 'alert(1)'),
-        'should not allow `li` outside list'
+        h('li', 'alert(1)'),
+        'should allow `li` outside list'
       )
 
       sst.deepEqual(