~jaro/balkon

ref: 7f0ce005ca7c6f7c92be37cc5e6526c1b3a32e54 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.