Outline project
Moved files, added virtualenv (& requirements.txt)
Db settings started
Started Plan stuff.
More plan work
Added json type to sqlachemy, continuing work on plans.
Swapped json with ujson since it's faster.
1) Swapped out json for ujson in the json object
2) Switched trial_days to trial_interval to have much trial flexibility
3) Documented plan objects
4) trial_interval and plan_interval now use dictionaries to define the intervals

Next: Testing the plans.
1) Fixed DB engine
2) Wrote plan tests, all pass
3) Fixed plan query statements
4) Added uniqueconstraint of on plan_id AND marketplace
5) Datetimes now use UTC timezone
6) Created create_table script
7) Added billy error clasess: NotFoundError, BadIntervalError, and AlreadyExistsError
1) Created coupon models
2) Created coupon access methods

Next: Coupon tests
Coupon  Testing
Moved things closer to the final directory structure.
Started customer and invoices models, needs more work…
1) Wrote many of the customer utils
2) Created InactiveObjectError
Fixed coupon test names
1) Fixed flow controls for utils
2) Updated invoice models.
1) Updated coupon/plan relationship, included backref
2) Added active_only to plan/coupon retrieval
3) Split JSONobj into JSONDict and JSONList
4) Removed unecessary inactive_object error
5) Updated invoice object
Continued work
Fixed readme
Last commit of the day.