~jaro/balkon

ref: 0e0791b319a7ed4ac45cfdcb0bf08d0dabac6410 balkon/.golden/arabicFiller20em d---------
Implement trimming spaces at end of lines.
Make paragraphRect origin always 0,0.

This convention should make it easier for the caller to properly place
the paragraph within a document.
Add test for RTL text.