Esprima

* Fix semicolon handling for expression statement (issue 462, 533)
* Disallow escaped characters in regular expression flags (issue 503)
* Performance improvement for location tracking (issue 520)
* Improve the speed of comment attachment (issue 522)

* Fix token handling of forward slash after an array literal (issue 512)

* Optionally attach comments to the owning syntax nodes (issue 197)
* Simplify binary parsing with stack-based shift reduce (issue 352)
* Always include the raw source of literals (issue 376)
* Add optional input source information (issue 386)
* Tokenizer API for pure lexical scanning (issue 398)
* Improve the web site and its online demos (issue 337, 400, 404)
* Performance improvement for location tracking (issue 417, 424)
* Support HTML comment syntax (issue 451)
* Drop support for legacy browsers (issue 474)

* Minimize the payload for packages (issue 362)
* Fix missing cases on an empty switch statement (issue 436)
* Support escaped ] in regexp literal character classes (issue 442)
* Tolerate invalid left-hand side expression (issue 130)

* Variable declaration needs at least one declarator (issue 391)
* Fix benchmark's variance unit conversion (issue 397)
* IE < 9: \v should be treated as vertical tab (issue 405)
* Unary expressions should always have prefix: true (issue 418)
* Catch clause should only accept an identifier (issue 423)
* Tolerate setters without parameter (issue 426)

Improvement:

* Fix esvalidate JUnit output upon a syntax error (issue 374)