Also fixed FDSelect3_4::get_fd
Fixed test_subset_cff1_strip_hints (wrong font names!)

in CFF1 & CFF2 accelerators, VORG subsetter

https://github.com/harfbuzz/harfbuzz/issues/1174
https://github.com/harfbuzz/harfbuzz/issues/1175

Some clang versions leave a std::round(float) weak symbol around...

If we wrote just this much every day...

https://github.com/harfbuzz/harfbuzz/issues/653#issuecomment-423905920

https://github.com/harfbuzz/harfbuzz/commit/62d1e0852a5549a1b510ad46a4b89f12730bb708#commitcomment-30613091

Towards disabling ZWJ-skipping in certain GPOS contexts.

Part of https://github.com/flutter/flutter/issues/16886

Ouch.  How did we not hit this bug before...

Fixes https://github.com/harfbuzz/harfbuzz/issues/653

Fixes https://github.com/harfbuzz/harfbuzz/issues/1171

I'm glad we have leak-detector bots now.

Decode the string as Python 3 returns bytes string, and also don’t
assume that it ends with a new line.

See also https://github.com/harfbuzz/harfbuzz/pull/1169

See also https://github.com/harfbuzz/harfbuzz/pull/1169

See also https://github.com/harfbuzz/harfbuzz/pull/1169

See also https://github.com/harfbuzz/harfbuzz/pull/1169

and some code cleanup

Currently hb-subset always desubroutinizes CFF fonts.
Note that even with this option fonttools won't generate the expected subset CFF fonts. They were manually created & tweaked to match hb-subset output.

new file: hb-ot-vorg-table.hh

Disabled FDSelect serialization to format 0 for compatibility with fonttools

We reverse too many times. Can be optimized. But I doubt many fonts
use reverse lookups, so doesn't matter.

Other than not applying user features, this completes morx table
implementation.

Just speculation. Needs tests to determine which is correct behavior.

also merged flush_n_args to flush_args into one
takes start index of the arguments on stack instead of count

derived "expected" subset fonts from fonttools then manually tweaked further so they resemble hb-subset output

this makes results consistent with FT
also optimized handling of path end points