Fixed vertical positioning

updated font metrics
fix main testing file
Fixes for right/center alignment
Better testing, faster cached render

Cleaned up code a little. Improved the interface for speed testing.
Change version to 3.0
Fix

- Don't need xOffset for cached lines, we already got the x
Fixes
WORKS!
Merge branch 'refs/heads/master' into align-by-lines

Conflicts:
	textwrap.lua