Release v8.10.0

https://github.com/lovell/sharp-libvips/releases/tag/v8.10.0

• MozJPEG
• libimgquant

v8.9.2-alpha5

Testing alpha version. Do not use this in production.

v8.9.1

Updates for v8.9.1

Release v8.9.1-alpha1

Merge remote-tracking branch 'upstream/master'

# Conflicts:
#	.github/workflows/build-release.yml
#	README.md
#	linux-x64/Dockerfile

v8.9.0

Updated libvips
Bumped libimagequant and webp

v8.8.1

Reduce minimum glibc to 2.17 by using CentOS 7 container

Increase minimum musl libc to 1.1.22 due to rust llvm8 dep
Bump webp, freetype, harfbuzz dependencies

v8.7.4

libvips 8.7.4 + libimagequant