fix. remove RevertRateArgsClass def from revert_rate module, use pack and unpack args methods to communicate params among worker threads.
fix. remove LiveAccountArgsClass def from live_account module, use pack and unpack args methods to communicate params among worker threads.
Merge branch 'working'
mod. move get_minute_diff_result to module level namespace.  Rename class attributes.
mod. refactor TimeToThreshold class.  Dropped unnecessarily complex nested class.  Implemented Multiprocessing Pools.