zdabroot now works on macs; try except catch when progressing
Standardised remove functionality (also system switching for future test modes).
Better install mode mismatch error message.
removed snoggles try/catch in remove
Merge pull request #104 from mjmottram/snoggles

zdabroot now works on macs; try except catch when progressing
Add fixed release rat-tools versions 4, 4.1, 4.2