MantaCommunicationError should disconnect

[ssfrr]

Generally the only reason we get a read/write error from HIDAPI is because the Manta is disconnected. I think the current behavior is to treat the error as nonfatal and leave it up to the application to disconnect and then go back into manta discovery mode. This seems unnecessarily complex and isn't necessarily obvious. I think a better option is to handle all the disconnect logic before handing the exception up to the application. The app is then free to reconnect.