~jaro/balkon

ref: ca4b08b080c75d50615f1d7229e0217b4a17f302 balkon/test/Data/Text 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.