switch policy to memory store
refactor token model to use new policy model
Add collections package
remove populate function from usage model
switch to policyName as id for policy
move index creation to token model from base redis model
fix policy jsdocs
Complete token model refactoring, will atomically perform create op
remove unused deps in usage model
fix policy model, inherit from model main
fix token model refs and policy interface
refactor token test
implement del() and get() methods for token model
clean redis model base and create existsAll() method
fix context issues
write test cases for created index/usage keys
write token delete test case and fix bugs found