v2.3.0

New features

• #110 Add :autorun option to prevent automatic loading of minitest/autorun.
• #109 Add :env and :all_env options allowing to specify env variables.

Improvements

• #108 & #111 Update default Spring command from spring testunit to bin/rake test allowing a smooth integration with Rails 4.1 apps.
• #106 Add support for Guard::Group's halt_on_fail feature.
• #104 Add an encoding declaration to the gemspec.
• #107 Remove "unused variable" warning.