~jaro/balkon

ref: e92c514980b34e43c2d3958129b94fc8ac0b64dc 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.