Changed version number to 3.2
Add 3.2 release notes
Fixed release notes

Two lines were mixed.
Updated and unified copyright
Updated release notes for 3.2

Reworked text about primus. We need people to try it, so that everyone
usecases are covered.
Forgot to update name of udev rule here...
Merge branch 'release-3.2' into develop

Backport release-3.2 in develop.