~jaro/balkon

ref: 3c9b4c5f866e6262c642e0ff9167adf42f837b83 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.