~jaro/balkon

ref: 5284d48e30e967eb10ab157b8616c191c3fe01e8 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.