- update to 2.110:
* Support `otfinfo --var`, which prints information about
variable fonts.
* `otfinfo -u` reports all Unicode code positions, not just the
BMP.
* `otfinfo -i` reports embedding permissions.
* Update feature, language, and script descriptions.
* Change output to avoid triggering pdftex bug.

- Correct licensing version to SPDX bnc:#741820
-version bump to 2.91
-fixes Correct some compilation problems on unusual systems
-Better handle combinations of fonts and options that
would create so many substitutions that otftotfm would run
-Correct crash on glyph names that start with a dot. Marc van
Dongen report.
-Support version 4 of the OpenType OS/2 table. Reported by
Thomas Zumbrunn.