First try at disconnect/reconnect detection#516

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uzlonewolf wants to merge 4 commits intoProxmark:masterfrom

uzlonewolf:serial-reconnect

Commits on Dec 11, 2017

Commits on Feb 17, 2018

Removed the retrieving of version information on re-connect so we don't overwrite BigBuf
LW
committed

Commits on Feb 18, 2018

Removed automatic version cache clearing, added [nocache] flag to "hw ver" to force cache clearing
LW
committed