Changelog for QCoDeS 0.1.3

Breaking Changes

New and slightly improved parameter (403)
Units is deprecated (with a warning and a redirect to unit)

New & Improved

Human readable snapshot
Drivers:
- add yokogawa gs200 (393)
- add SG384 (318)
- new awg5014 driver
- add Spectrum M4i.44xx-x8 driver
Automatic build / test system

Fixed

fix Keithely 2600 precision
Cosmetic issues