Dobrica Pavlinušić's random unstructured stuff

Rigol: Revision 2

* http://www.gotroot.ca/rigol/
* https://github.com/RoGeorge/DS1054Z_screen_capture
* https://github.com/rheslip/PyDSA
* https://github.com/wd5gnr/qrigol
* https://github.com/pklaus/ds1054z

^ firmware update

* http://beyondmeasure.rigoltech.com/acton/fs/blocks/showLandingPage/a/1579/p/p-0019/t/page/fm/0