Emulate missing interface calls; only read_raw and write_raw are required
Update docs
Add indication that initialize is being called from within top-level constructor
Improve dicon switch init
Python 2 fixes
Add support for PyVisa
Updated readme for PyVISA support
Updated readme
Implemented read_raw workaround for PyVISA wrapper
Update interface handling of lists for write and ask
Added Agilent U3606A DMM + DC Power Supply
Rebased