~jaro/balkon

ref: b7687d6dbb85576bcf07bbc273424a0cef3a9dda balkon/test/Data/Text 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.