finished updating the miner type handlers to create subclasses of the backend and type to create a miner, each of which handles its own data to simplify creation of new miner types

miners/_backends/__init__.py

@@ -0,0 +1,5 @@
+from .bmminer import BMMiner
+from .bosminer import BOSMiner
+from .btminer import BTMiner
+from .cgminer import CGMiner
+from .hiveon import Hiveon