Spin chain the gears, spin chain and circulate the gears, deuces wild.

Also work on spin chain and exchange the gears, but we need to fix some
breathing issues before exchange the diamonds will work.
Add cross reactivate to reactivate test
Write a bit more about from/select in calldefs.tex.
Turn off jacoco on more large class files.
Update notes file with more thoughts and to-dos.