New version, Java 17 only from here on.

Last version that supports -source=11.

Second refactoring checkpoint.

Refactoring checkpoint version bump. Might be the last version compil…

…able under JDK8 (--target=8 is definitely still supported), but we'll see.

No complaints for a while despite large refactoring, so version bump.

Cleanup and version bump. Should be the last version allowing -target…

…=1.7 .

Version bump.

No complaints for a while, so a new version.

Since I haven't had a complaint for ages, have a new stable version.

0.29 release, works on MW 1.22/1.23 (alpha)