Major restructure.
Creates a "bitcoin" package and moves all modules that are NOT called directly in to it.
Moves unused scripts in to "archive" folder.
Fixes the horrible import mechanism and replaces it with the preferred absolute imports.
Moves all code from "common" modules to the "__init__.py" file in the same package making the project structure tighter.
Gives decision logger the ability to append an empty line after a log.
All decision logs will now start with the current time stamp and end with an empty line to separate them.
Fixes type casting error in buy_for_usd. Method has been tested.