A sanitiser for untrusted font files. Currently, this is just a wrapper around ots, which it builds a copy of.

To update:

• check the appropriate upstream tag/commit of ots and its dependencies
• edit the _TAG variables at the top of the src/deps/update_deps.sh script
• $ bash src/deps/update_deps.sh
• $ git add src/deps
• Potentially adjust src/CMakeLists.txt to accommodate new and removed files from the dependencies
• make cargo build and cargo test work
• update the crate version number and the CHANGELOG.md

• fontsan: BSD 3-clause license
• ots: BSD 3-clause license
• lz4: BSD 2-Clause license
• brotli: MIT license
• woff2: MIT license