Return invalid options as strings
Mix.CLITest: explicitly declare environment variables (Windows-friendly)
Fix example for exception/1
Merge pull request #2315 from chyndman/gsoc-windows

Mix.CLITest: explicitly declare environment variables (Windows-friendly)
Merge pull request #2317 from vicmargar/fix-exception-doc

Fix doc example for exception/1
\d is a printable character
Merge pull request #2312 from alco/option-parser-fixes

Return invalid options as strings
Update CHANGELOG, fix tests and typespecs
Exit with proper test code on test_erlang, closes #2313
elixir.bat defers to mix for handling help options
Proof-read Agent docs
Merge pull request #2322 from alco/agent-doc

Proof-read Agent docs
elixir.bat only triggers help at first argument
Merge pull request #2321 from chyndman/mix-bat-help

elixir.bat defers to mix for handling help options
elixir.bat fixed to prevent eating quotes
Merge pull request #2324 from chyndman/elixir-bat-fix

elixir.bat fixed to prevent eating quotes
Deprecate Dict.Behaviour in favor of Dict
Dedicated inspect implementation for regexes. Fix #2250

We no longer share the implementation with BitString because regex
literals have slightly different escaping rules
Do not install rebar bundled with elixir
Change help heading on mix