Fix incremental text layout; update all glyphs up to grapheme boundaries
Fix incremental text layout; update all glyphs up to grapheme boundaries

Alwnikrotikz/pyglet,qbektrix/pyglet,odyaka341/pyglet,gdkar/pyglet,xshotD/pyglet,kmonsoor/pyglet,google-code-export/pyglet,Alwnikrotikz/pyglet,cledio66/pyglet,arifgursel/pyglet,kmonsoor/pyglet,odyaka341/pyglet,mpasternak/pyglet-fix-issue-552,shaileshgoogler/pyglet,mpasternak/michaldtz-fix-552,gdkar/pyglet,arifgursel/pyglet,google-code-export/pyglet,google-code-export/pyglet,Austin503/pyglet,mpasternak/michaldtz-fixes-518-522,mpasternak/michaldtz-fixes-518-522,kmonsoor/pyglet,odyaka341/pyglet,Alwnikrotikz/pyglet,qbektrix/pyglet,shaileshgoogler/pyglet,qbektrix/pyglet,arifgursel/pyglet,xshotD/pyglet,qbektrix/pyglet,Alwnikrotikz/pyglet,mpasternak/pyglet-fix-issue-552,cledio66/pyglet,gdkar/pyglet,shaileshgoogler/pyglet,kmonsoor/pyglet,mpasternak/pyglet-fix-issue-518-522,qbektrix/pyglet,mpasternak/michaldtz-fix-552,odyaka341/pyglet,arifgursel/pyglet,Austin503/pyglet,cledio66/pyglet,mpasternak/michaldtz-fix-552,mpasternak/pyglet-fix-issue-518-522,odyaka341/pyglet,mpasternak/pyglet-fix-issue-552,shaileshgoogler/pyglet,xshotD/pyglet,xshotD/pyglet,kmonsoor/pyglet,gdkar/pyglet,mpasternak/michaldtz-fixes-518-522,mpasternak/pyglet-fix-issue-552,arifgursel/pyglet,xshotD/pyglet,Austin503/pyglet,Austin503/pyglet,google-code-export/pyglet,google-code-export/pyglet,Alwnikrotikz/pyglet,gdkar/pyglet,cledio66/pyglet,Austin503/pyglet,mpasternak/pyglet-fix-issue-518-522,shaileshgoogler/pyglet,mpasternak/michaldtz-fixes-518-522,mpasternak/pyglet-fix-issue-518-522,cledio66/pyglet,mpasternak/michaldtz-fix-552