Remove extra space in width (Firefox doesn't process it correctly).
Make sure that <mo> with minsize or maxsize set are stretched.
Fix \enclose{}[arrow=1]{} to add updiagonalarrow.
Fix scaling problem with mpadded.
Move generic font and fontdata to main jax object so that we are sure to have one (it will be overwritten when the actual font data are loaded).
Mark functions that are turned into TEXCLASS.OP so that spacing can be improved for things that look like \left...\right.
Avoid IE10 compatibility mode (which says v7.0) but documentMode = 9 problem with transformNode() call.
Handle MSIE padding bug properly when linebreaking mmultiscripts and when adding nulldelimiterspace wround fractions.
Add option to not show MathPlayer alert (helps with testsuite)
Remove &nbsp; when msiePlaceBoxBug is in effect
Always use start marker in IE (fixes sizes of background colors, see mphantom color test).
Ignore mathsize for non-token elements when figuring scales.
Make sure svg is defined before using its width
Improve handling of removal of &nbsp; for IE in AlignBox
Fix up variable issues identified by packer
Merge remote-tracking branch 'mathjax/develop' into ctop

Conflicts:
	unpacked/extensions/MathML/content-mathml.js