- update to 0.8.4.1
* Fixed bold-italic in OMML. Previously `\mathbfit` didn't work
properly in OMML output.
* Ignore `\nonumber`.
* Allow styling in `\operatorname` e.g. `\operatorname{\mathcal{L}}`.
* Fixed bug in `supHide` and `subHide` for OMML. This led to little
empty boxes being displayed in integrals with subscripts but no
superscripts.
* Implemented `\mod` as a math operator. This doesn't capture all the
spacing subtleties of the amsmath version, but should be good enough
for most purposes.
* Allow pandoc-types < 1.17.
* Improved symbol spacing in Pandoc output.
This change avoids putting space around binary symbols that
come at the beginning or end of a group, or appear on their
own. It also avoids spacing on a binary symbol that follows
a Bin, Op, Rel, Open, or Punct atom, in accord with
TeXBook Appendix G. We could go farther towards exactly
matching the TeXBook rules, but this simple change goes some of
the way.