Release History

0.2 - In development

  • Migrated to CSS-based layout, rather than Cassowary/constraint layout.


  • Further improvements to multiple-repository packaging strategy.
  • Ensure Ctrl-C is honored by apps.
  • Cocoa: Added runtime warnings when minimum OS X version is not met.


  • Refactored code into multiple repositories, so that users of one backend don’t have to carry the overhead of other installed platforms
  • Corrected a range of bugs, mostly related to problems under Python 3.


Initial public release. Includes:

  • A Cocoa (OS X) backend
  • A GTK+ backend
  • A proof-of-concept Win32 backend
  • A proof-of-concept iOS backend