Added remove functionality to store

The code is a little broken now because it re-uses the same code
from the get functionality. It should not need to.

Other changes:
- Added documentation to the stringify method
Pool: replaced active pool with store

Only minor test changes needed to be made.

Other changes:
- Fixed lint errors in pool test and store test
- Included underscore in lint globals
Pooled: started on release function and testing, fixed isssues

Some issues came up while creating and testing a release funciton
on the Pooled class. These were resolved. Testing the release function
will continue.