Make \big and its relatives use script or scriptscript fonts (although size is still absolute, as it is in TeX) so that it balances the text weight in scripts.  Resolves issue #350.
Bump versions, repack, and recombine previous commit
Remove commented out code and bump version number
Put back the original packed files (we're not tracking those any more)
Merge branch 'issue350' into develop

Resolves issue #350.