Handle spacing for AMS alignments better (0 space between columns, but add space to left of operators.
Remove space around accent operators (resolves issue #815).
Set cache-breaking revision number.
Merge branch 'issue811' into v2.4-beta.  Issue #811.
Merge branch 'issue815' into v2.4-beta.  Issue #815.
Fix zoom box sizes for tagged equations in HTML-CSS and NativeMML output.  Issue #824.
Trap error reading cookies.  Resolves issue #821.
Remove fonts from default VARIANT values, which where causing -smallOP to no inherit the normal fonts; this caused \int in STIX (and other fonts) not to be found, and so default to unknown character bboxes.  Resolves issue #820.
Merge branch 'issue824' into v2.4-beta.  Issue #824.
Merge branch 'issue821' into v2.4-beta.  Issue 821.
Merge branch 'issue820' into v2.4-beta.  Issue #820.
Remove some NativeMML work-arounds for FF >= 29 (apparently fixed in this version).  Resolves issue #813.
Add semantics annotation to NativeMML output.  This is done in the NativeMML output jax rather than the input jax so that it can be done for any input format (that provides an encoding for it).  Also, it avoids having the Show As MathML output include the annotation.  Resolves issue #814.
Merge branch 'issue813' into v2.4-beta.  Issue #813.
Merge branch 'issue814' into v2.4-beta.  Issue #814.
Add support for semantics annotations to toMathML, and use a menu item to control it.
Fix bounding box problem in Firefox with stretchy delimiters (and remove alignment hack that doesn't seem to be needed any longer).  resolves issue #729.
Fix several problems with stretchy delimiters in SVG output (minsize didn't always get processed, stretched characters weren't marked as such).
Don't add stretchy=dalse if it is not needed
Merge branch 'issue814' into v2.4-beta. (semantic annotations in
toMathML output).  Issue #814.