Aim for a release in late May.

TODO

• dzsave to target
• tiffsave to target see PR Add tiffsave target #2798
• GIF save improvements see PR cgifsave: reuse global palette, if possible #2797
• support linear light in JXL see PR add libjxl ICC and scRGB support #2815
• resolve JXL lossless encode issues
• update downstream projects where necessary
• fix JXL save of float RGB (need new SAVEABLE enum)
• another round of GIF fixes
• website docs update
• release notes and a news post to write
• put out an rc for evaluation
• .... and get the rc at least mostly approved by downstream users
• publicity

Milestone: https://github.com/libvips/libvips/milestone/11