`vhea` and `glyf` fixes#305

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StLyn4 wants to merge 4 commits intofoliojs:masterfrom

StLyn4:vhea-and-glyf-fixes

Commits on Mar 26, 2023

Fix `VHEA` table structure
Vsevolod Volkov
committed

Commits on Apr 7, 2023

Fix loading non-existent data from `glyf` table
Vsevolod Volkov
committed
Setting zero coordinates for empty glyphs (space)
Vsevolod Volkov
committed

Commits on Apr 10, 2023

Handling `maxp`, `post, `vhea` versions as Version16Dot16
Vsevolod Volkov
committed