Implement TextField::isFontCompatible
Cleanup
Fix line metrics
Implement TextField::replaceText
Implement TextField::setTextFormat
Implement TextField::getTextFormat
Implement TextField::replaceSelectedText
More cleanup
Add acid test
Support text scrolling
Merge branch 'master' of github.com:mozilla/shumway into textfield
Make all Loader methods native

... because the remaining AS3-implemented ones didn't do anything useful, anymore.
Ensure line metrics when getting maxScrollH/maxScrollV
Add acid test for textfield scroll support
Fix merging text formats
Implement TextField::getSelectedText/appendText natively
Some comments and cleanup
Disable caching in draw bitmap data.
Invalidate paint and update inspector when an renderable is updated.
Fix and comment replaceText