Alpha Version 2

This is the second alpha release of Spotbit! There are a lot of changes that make Spotbit more complete and much more stable. They are:

• fixes to the prune method that was previously deleting too much data from tables without ms timestamp precision.
• more error checking conditions in now and request
• cleaned up print statements
• the ability to request (up to) the complete price / candle chart history of an exchange
• if-else logic made less redundant
• removed exchanges that are no longer functional or have non-functional apis from the complete list of supported exchanges
• updated the example config file
• improved the install script so that spotbit can be used as a systemd service
• added logging
• better-looking data when a request is made on-demand