Expose Harfbuzz 3.3 APIs.

Throw out-of-memory errors instead of segfaulting.

Merge branch 'master' of git.adrian.geek.nz:/srv/git/harfbuzz-pure

Documentation-compilation fixes, release v1!

Fix use of utf8-light dependency, dropping it.

Fix tag encoding & decoding (remembered hex digits are nybbles not bytes)

Document shaping & version-number APIs!

Finish documenting fonts!

Extend and document font & face language bindings.

Document Buffer API.

Correctly decode Harfbuzz output structs.

I didn't consider the presence of private-fields before!

Fix segfaults & include test assets (major refactor).

Finalize release 0.1!

Fix segfault upon too much HarfBuzz concurrency.

Fix reentrancy complaints from GHC, attempt to fix segfault.

Add documentation & corrected type signatures.

Add, test, & fix shaping function.

Fix build linking errors (mostly by upgrading GHC).

I'm now running on this on elementary OS Jolnir.

Try adding C++ to Haskell bridge via C.

Try wrapping HarfBuzz C++ functions in C functions for calling convention/linking issues.

Committing so I can try building on a newer OS.