Adjust ɨ and ɉ

[moyogo]

The ɨ and ɉ have a crossbar that is too wide and they have the width of i and j.
They clash with letters before and after.

This PR:

• Adds _part.crossbar_narrow
• Adjusts uni0268.ccmp to use _part.crossbar_narrow
• Adjusts ibar to use uni0268.ccmp
• Adjusts uni0249.ccmp to used _part.crossbar_narrow
• Adds anchors to mentionned glyphs
• Adjusts jdotless 'cross' anchor
• Adjusts jdotlessbar
• Rename jstroke.ss07 to uni0249.ss07 to match uni0249 (or uni0249.ccmp)
• Adds ibar.ss07
• Updates ss07 for ibar.ss07 and uni0249.ss07
• Updates ccmp with useMarkFiltering for softdotted substitution lookup

[rsms]

Thank you! This looks pretty good but I wonder if the change needs to cover more glyphs, for example /lbar

Your branch: (with your changes)

Current main branch: (without your changes)

The above is Display Black of Inter-Roman.glyphs with the following preview string:

/crossbar_short.uc/space/Dbar1/Lbar/space/Dcroat/crossbar.uc/space/Zbar/uni04FA/twostroke/Tbar/Ghestrokecyrillic/afii10146/Ustraightstrokecyrillic/crossbar/bbar/dcroat/dong/hbar/uni0268.ccmp/space/ibar/space/uni0249/space/jdotlessbar/space/uni0249.ccmp/space/lbar/space/lbar.ss02/space/uni024D/space/uni03FC/uni04FB/glottalstopbarrev/jhookdblbar/pipedblbar/ghestrokecyrillic/ustraightstrokecyrillic/uni0268.ccmp/_part.crossbar_compact/uni0243/Istroke/Istroke.1/uni0248/gbar/zbar/franc