Don't clip delimiters that stretch farther than they are they supposed to.  (This is handled by letting them extend beyond their bounding box, but that means they can overlap the rows above or below.  Idealy, this should alter the heights of the rows, but that could require restretching rows when equalrows is set, and could lead to looping to try to get the table to stablize.  Resolves issue #701 for now.
Prevent mo's from being stretched more often than needed (check that they aren't already the right size when matching mrow size).  Also, allow TeXAtom to stretch properly when part of an embellished operator.  Issue #701.
Make \\left...\\right be of TeX class INNER.  Resolves issue #746.
Handle adding of nulldelimiterspace so taht it is properly included in the width of the fraction.  Resolves issue #547.
Change fuzz factor for Chrome square roots.  Resolves issue #744.
Merge branch 'issue701' into develop.  Issue #701.
Merge branch 'issue746' into develop.  Issue #746.
Merge branch 'issue547' into develop.  Issue #547.
Merge branch 'issue744' into develop.  Issue #744.