Unspanning up to 114
Despanning up to 123
Despanning up to 130
Despanning up to 135
Unspanning up to 138 and correcting a long-standing naming error
Despanning up to 145
Despanning up to 150
Despanning up to 152, pruning older paths
Despanning up to 160
Fixing some global find & replace gone wild
Cleaning up a few missed spans
Despanning up to 167
Despanning up to 175
One more tweak for 175
Despanning up to 180
Despanning up to 184
Despanning 185. Tricky one, more happening with the spans than usual.