Start work on #13
Checkpoint on #13
Progress on #13
some progress
compile
ripping everything up
compile and run, also a new subcommand
a little comment
a bunch of refactors
some progress and reshuffling
some work
checlkpkointt
some progress, but eh
more debugging and progress
progress debugging this thing....
fix a bunch of bugs

sort of working now...
use the hash for sigs, not the full boat.  simplified.
progress on tmpdirs
a refactor
progress on the index file stuff