2.3.0

New and changed features

• Numerous bug fixes
• You can select to group todos on the home page by context or by
  project (using the view menu). This also works for tag page, the
  project page, the tickler and the context page
• You can now change the state of a context to closed
• Czech locale has been renamed from cz to cs to follow ISO standards
• Added Russian locale (@AlexStein)
• The toggle-notes and toggle-collapsed-containers have been moved into
  the view menu.
• The environment must now be specified during asset precompilation.
• Tracks is tested on Ruby 1.9.3, 2.0.0, and 2.1

Removed features

• Ruby 1.8.x is no longer supported

Under the hood

• Upgraded Rails to 4.1
• Several refactorings for easier maintenance