bump to 20.1.0

bump to 20.0.4

bump to 20.0.3

bump to 20.0.2

fix changelog

document 20.0.1 change

fix doc on 19.10.0

Change maintainers (benoitc#2147)

changes maintainers to shows who is active on the project as of today.

Release version 19.9.0

Release version 19.8.1

Release version 19.8.0