Esprima

* Run the test suite in a browser environment (issue 1004)
* Ensure a comma between imported default binding and named imports (issue 1046)
* Distinguish `yield` as a keyword vs an identifier (issue 1186)
* Support ES6 meta property `new.target` (issue 1203)
* Fix the syntax node for yield with expression (issue 1223)
* Fix the check of duplicated proto in property names (issue 1225)
* Fix ES6 Unicode escape in identifier name (issue 1229)
* Support ES6 IdentifierStart and IdentifierPart (issue 1232)
* Treat await as a reserved word when parsing as a module (issue 1234)
* Recognize identifier characters from Unicode SMP (issue 1244)
* Ensure that export and import can be followed by a comma (issue 1250)
* Fix yield operator precedence (issue 1262)

* Fix some cases of comment attachment (issue 1071, 1175)
* Fix the handling of destructuring in function arguments (issue 1193)
* Fix invalid ranges in assignment expression (issue 1201)

* Support ES6 for-of iteration (issue 1047)
* Support ES6 spread arguments (issue 1169)
* Minimize npm payload (issue 1191)

* Support ES6 generator (issue 1033)
* Improve parsing of regular expressions with `u` flag (issue 1179)

* Support ES6 import and export declarations (issue 1000)
* Fix line terminator before arrow not recognized as error (issue 1009)
* Support ES6 destructuring (issue 1045)
* Support ES6 template literal (issue 1074)
* Fix the handling of invalid/incomplete string escape sequences (issue 1106)
* Fix ES3 static member access restriction (issue 1120)
* Support for `super` in ES6 class (issue 1147)

* Support ES6 class (issue 1001)
* Support ES6 rest parameter (issue 1011)
* Expand the location of property getter, setter, and methods (issue 1029)
* Enable TryStatement transition to a single handler (issue 1031)
* Support ES6 computed property name (issue 1037)
* Tolerate unclosed block comment (issue 1041)
* Support ES6 lexical declaration (issue 1065)