~jaro/balkon

ref: 462afb29bdb429483f49de96b857f6e94b2df2a5 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.