Adds a usd() method to client analogous to btc().
Adjusts variables in rising_peak and absolute_zero.
Modifies a few values.
Adds "falling_trench" decision.
Implements a redis client which is used to access all thresholds and factors stored in redis. All changes to these are now done directly in redis without having to change the decision files repeatedly.
Implements utility functions for using redis_client from ipython.
All decisions are changed accordingly.