0.6.6

• added a number of power reduction registers (thanks @fredlcore)
• parent connection unit now honored in meter and battery connection (thanks @ctrl-alt-d)
• added power reduction and battery documentation
• fixed current scaling value in example.py (thanks @rdorsch)
• migrated to newer project structure, cleaned up package files
• removed calculated values from example_influxdb.py (see #28)
• fixed meter scaling in example_influxdb.py