Add reason not to use it
Add hash methods to compare
Switch C-loop style to Perl style
It's much faster usually. Thanks Brad for the note.
Change args to layer() to allow misses recording
This is handy if part of your cleanup logic you want to populate misses
of an higher cache with data from a lower one.
Remove useless comment
Implement it all?
Fix broken @ISA
Complete documentation hopefully
initial commit: just docs