Changes since 8.11.3:
- fix off-by-one error in new rank fast path
- add "unlimited" flag to png load [joshuamsager]
- improve filtering of .v enums [lovell]
- better logic to prevent shrink to nothing in thumbnail [kleisauke]
Windows binaries are here: https://github.com/libvips/build-win64-mxe/releases/tag/v8.11.4