Add FontWeight enum
Add font weight and text align to the minilanguage
Add support for setting the Rect.onChange callback on init
A nicer Rule repr
Test against text-align property
Whitespace
Properly de-invalidate context and layout of Label
Support for various text- and font-related properties
Take the text-align from ComputedStyle in Label
Fix positioning of pango layout (although docs say otherwise!)
Remove deprecated geometryBuffer thingy
Proper invalidation support for cairo and pango contexts
Make use of invalidation notifications in LabelledWidget
Remove our own wrapper around pango, use pygobject instead
Choose a wiser order for namespace import
Port Label to pygobject