~jaro/balkon

ref: 1c4f51d85e470cec31f12e4173c9985de3c554e3 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.