Merge styles of parent
Merge with master
Merge branch 'master' into fi/nested_styles
TextBlock initialize method expects a String array
Merge conflict with master fixed
Percentage strings for width/height
Allow whitespace in percentage strings
Fix resizing for background
Add method for defining default style for a class

See samples/sample56.rb for a test
Merge branch 'master' into backGroundResizing
specs for parent dimensions
Removed debugging statemens *blush*
Fixed background spec
fixed specs
guess game not working, see #461
Change order so percent strings also flow through relative calculations
Clearer handling of invalid strings
Merge branch 'master' into fi/nested_styles
Create SWT backend for Download

This allows us to push off the processing of the Download's block
to the GUI thread to avoid thread access errors.
Fix failure in SWT test

Highly suspect this isn't the right way to address this, but found that
the async_exec wasn't being called properly in the spec running. No idea why not.