Bumped to Elixir 0.12
Merge pull request #4 from aidansteele/patch-1

Bumped to Elixir 0.12
Update gitignore
Fix decode_to_list test
Bump version
Bump package version
Merge remote-tracking branch 'upstream/master'
Allow Elixir v0.13.0-dev

Conflicts:
	mix.exs