Add pretty printing library to Elixir stdlib
Tests for wadler; Guards for primitive types.
Merged (Fri May 10 06:22:13 EEST 2013)
Put pretty printing library into core
Binary.Inspect now uses pretty printing library
Implement Binary.Chars for URI.Info
Adding String.contains?
Detect whether a string contains another string.
Merge pull request #1185 from meh/uri-to_binary

Implement Binary.Chars for URI.Info
Bring system.ex back to bootstrap. Closes #1155
Merge pull request #1183 from alco/system-bootstrap

Bring system.ex back to bootstrap
Added -v --version option to all elixir commands.

Fixes #1178
Merge pull request #1181 from jjh42/add-version-option

Added -v --version option to all elixir commands.
:binary.match supports a list of matches
Ensure --cookie is set before remsh starts, closes #1190
Clean up DocTestTest
Disallow &-partial calls on the right side of |>
Implement assert_compile_fail

The format_rescue function has been found useful in multiple instances,
so it made sense to generalize it into its own assertion.
Add support for direct dependencies of umbrella
Add deps to 'mix new --umbrella'
Merge pull request #1186 from ericmj/mix-umbrella-deps

Add support for direct dependencies of umbrella project