One step back, two steps forward.

Lots of changes to the extension system. Lots of internal changes to style and
layout systems. Likely introduced some new bugs in the process, but cleaned up a
lot and will get to fixing visual bugs next.

High level extension system changes:

  1. In previous releases Bike would automatically build extensions for you.
    That’s been removed. Now use the Bike Extension
    Kit
    to build extensions.

  2. In previous releases styles and extensiosn were separate. Now styles are a
    part of the extension system. Calling them outline styles now instead of themes.

  3. New documentation and tutorials to explain it all.