* Harmonize serif variants between `u` and `grek/mu`
Also further adjust Greek Eta.
This makes all serif variants available for lower u also available for lower Greek Mu. Furthermore, as a consequence of being fully merged into `latin/u.ptl`, it now uses the same naming convention for its variants.
* fix u on ss16
* Eta and Insular R fixes
Most fonts have Greek Small Eta follow lowercase N, most noticeably on Ubuntu mono which inherits its earless cornered shape.
Additionally, using a full retroflex hook for Insular R puts both legs too close to each other. The left leg should descend below the baseline, but the right leg should not.
* fixes
- CYRILLIC CAPITAL LETTER DZZE (`U+A688`) (#1799).
- CYRILLIC SMALL LETTER DZZE (`U+A689`) (#1799).
- MODIFIER LETTER CYRILLIC SMALL DZZE (`U+1E04A`) (#1799).
Double arrows have a minimum gap size equal to the bar size;
Triple arrows have a minimum gap size of 75% of the bar size;
Quadruple arrows will now have a minimum gap size of 62.5% of the bar size.
This follows a trend of halving the distance between 100% and 50% with every additional bar. If there were a quintuple arrow in Unicode, then the gap should be 56.25% of the bar size, and so on, but never reaching 50%.
- COMBINING LATIN SMALL LETTER INSULAR R (`U+1ACD`) (#1808).
- LATIN CAPITAL LETTER INSULAR R (`U+A782`) (#1808).
- LATIN SMALL LETTER INSULAR R (`U+A783`) (#1808).
* I Longa, modifier capital H stroke correction, etc
also cleanup duplicate Latin upsilon with stroke binding which was my fault in the first place.
* undo unnecessary modifier H stroke correction
- LATIN CAPITAL LETTER INSULAR F (`U+A77B`) (#1786).
- LATIN SMALL LETTER INSULAR F (`U+A77C`) (#1786).
- LATIN CAPITAL LETTER INSULAR S (`U+A784`) (#1786).
- LATIN SMALL LETTER INSULAR S (`U+A785`) (#1786).
