~jaro/balkon

ref: 2d69d190193e4edf1a137fc615b8eb0c895f1824 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.