~jaro/balkon

ref: 1dd8f91e1ad98c2416182880edd26902f7e483c8 balkon/test/Data/Text/ParagraphLayout d---------
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.