Use utils namespace in Subsystem
Remove test redis config
Remove instance check in Node.__eq__
Update README
Refactor and simplify db/fs caching logic
Update/flesh out docs
Add examples module
BUG: Only check current process' memory usage
BUG: Don't iterate directly over filtered purviews

For some reason, find_mip was being called on every purview, including
the trivially reducible ones that should have been filtered out.
Only store MICE in cache if there's no cut

Also, use the proper memory check (only check current PID)
Comments/formatting