[WIP] Support for remote serial ports#176

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crazy4pi314 wants to merge 2 commits intoinstrumentkit:mainfrom

crazy4pi314:feature-remote-serial

Commits on Jul 11, 2017

Added SerialBase to allowed serial port bases.
crazy4pi314
committed

Commits on Jul 12, 2017

Added open_serial_remote method. Still not fully working with APT b/c byte stuff.
crazy4pi314
committed