move and rename files
refactor bankofdad.py to move data models to their respective modules in bankofdad/model
hide enamlcache
refactor existing bankofdad unittests
create distribution tools with setup.py and add modules to support
fix account imports and tests
move transaction types to constants module
refactor trans_date -> time_stamp
add deposit transactions
add allowance to accounts
add interest to accounts
add withdrawals to account