Fix parsing of `return %{string}`

The (ludicrously convoluted) Ruby lexer has a number of states, which affect
how various constru...

Fix parsing of `method do ... end` inside lambda body

The lexer has a special state in which it lexes "do" as kDO_BLOCK rather than
kDO. It enters thi...

Correct defaults for Date.new

[skip ci]

Adds Nashorn runner

Run rubyspec/core/kernel/extend_spec

Split the internal runtime bridge() helper

Previously the bridge helper had a double life with internal branching
based on the number of a...

Was copy/pasted from Opal.append_features.

Was missing the variable declaration.

[ci skip]

fixes #935

Introduce opal/platform (stdlib) & cleanup testing.rake

cc @vais

- use CLI runners instead of dumping to a file to better test runners*
- use opal/platform to ha...

This file will take care of detecting the current platform and loading
the proper IO & Kernel ad...

This better reflects the parts exercised by the spec.

Accept { 'symbol literal': val } syntax

At the same time, don't mess up the parsing of:

cond ? 'string':'another string'

The precedence declaration for unary plus followed by a number is not needed.
It doesn't actuall...

- CDATA is not supported in HTML5 doctype
- JS code wasn't escaped leading to errors (e.g. if it...

fixes #1026

Platform dependent code can override it.

fix Native to work with Array

Update to latest RubySpec

BasicObject#instance_eval(str) now compliant

Needs `require "opal-parser"`.

closes #690 (seems fixed on master)

Optimize Struct access

Optimize super as a bareword

This keeps style similar to surrounding code by only porting what does
not directly work in Ruby.

When using methods on a struct, we don't need to check whether the
struct has that as a member. ...

Optimize Kernel#hash

Using the class name and id aren't necessary since the Hash redux in
bd61c41ebeb59885ac9d325141e...

Remove unused terminals from grammar

Clean up a bit of cruft in the grammar. If these are ever needed, they can
be added back.

Optimize aliasing methods

throw exception when included object is a class, fixes #1146

Doesn't seem the wrapper is necessary anymore. This removes
deoptimizations that occur due to th...

delete repeat "but"

Ensure cloned objects do not copy ivars that are not returned by #instance_variables

Makes https://github.com/opal/opal/pull/1186 behavior consistent

fix "backslash must appear before newline" when Opal ERB code block includes a function call wit...

Implement Kernel#remove_instance_variable

ref #1192

Also update the write proc of const instead go gvars for Node.

Fix Kernel#instance_variables, Kernel#instance_variable_get and Kernel#instance_variable_set for...

Clean up RubySpec bug filters

fix JS.new to work with DOM objects

Bump RUBY_VERSION from 2.1.5 to 2.2.3

- removed noop kernel inclusions
- fixed sorting
- added some empty lines around library specs

Fix Kernel#instance_variables for Hash and nil

doc: On the number of commits per PR

In response to @vais (https://github.com/opal/opal/pull/1180#issuecomment-155060845) :)

[skip ci]