Add initial version of the Read10 command
Finish Read(10) class. Simple unit test added.
Add the Read12 and Read16 commands
Rename ReadCapacity functions to total_lba() and blocksize()
Introduce SCSIDeviceBS class to send ReadCapacity command to device and save the block size and total LBAs. Useful class to keep things organized.
Merge branch 'read_10_12_16'