kangax/fabric.js — pull request #1441 by ChrisBuergi (2014-06-30 14:30:42+00:00)
Title: Render IText correctly when only fontWeight or fontStyle changes

Fixes rendering of characters that only have the styles "fontWeight" and/or "fontStyle" set. Previously _hasStyleChanged() did not detect a change if only one of those two styles have been set.