Added some common extension groups and SCPI implementations
Fix small bug in scope input impedance selection
Update agilentBaseScope to use new extension groups and SCPI implementations
Update E3600A series to use scpi.common.Memory
Fix bandwidth parameter
Fix MRO for proper OCP overrides
Add frequency range information
Update 86140B series OSA driver to use scpi.common.Memory and extra.common.Screenshot
Implement output impedance selection for 2000/3000/4000 wavegen option
Restrict duty cycle range
Merging upstream