~jaro/balkon

ref: ba7868e316f7d3e077a2e5dd425d752777427d3f balkon/test/Data/Text/ParagraphLayout d---------
Fix pretty printing for fragmented spans.
Upgrade Fragment to contain pen position.
Clean up ParagraphConstruction.
Use infix operators for constructing test data.
Implement "plain" interface.
Create "plain" interface.
Add module for working with rectangle coordinates.
Add explicit scale to test font.
Separate tests by module.