Release madgui 20.10.0

Release madgui 20.7.0

Release madgui 20.6.0

Release madgui 20.4.1

Release madgui 20.4.1

Release madgui 20.4.0

Release 20.2.1

Merge branch 'master' of https://github.com/hibtc/madgui

 If this is not correct, please remove the file

Release madgui 19.6.3

- use the ORM orbit correction method by default
- add tooltips for the elementinfo tabs

Release madgui 19.6.2

- fix exception in GLWidget.closeEvent
- explicitly request OpenGL version to improve chances of getting a 3.0 context
- request OpenGL 3.2 core profile (disallow deprecated features) to avoid
  running into backward incompatibilities later on