TextRange extension to skip zero width characters

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From simongem...@gmail.com on February 19, 2014 05:45:02

I have the unfortunate situation where I have to use zero-width white space characters. They are zero width, so they don't show up, but they still count as a character when rangy is counting character positions. Not sure if you want to handle this situation, but if your aim is to provide a method to get to the visible 5th character, then you might want to ignore this special character (U200B).

Original issue: http://code.google.com/p/rangy/issues/detail?id=198

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Implemented as ignoreCharacters option in characterOptions.