Caxton

At last Caxton 0.6.0 (1.18.2 – 1.21.5) and 0.7.0 (1.21.8) are out!

This update consists mostly of bug fixes and internal changes to allow porting to versions 1.21.1 and above. Unfortunately, my motivation to work on Caxton has been dwindling, so no shiny features.

Caxton 0.6.x will receively only major bug fixes from now on. 0.7.x will be supported until the release of 1.21.9.