~jaro/balkon

ref: 024cddaac622db5ccd0d57c48ba1b06a1eaf82a8 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.