Add news about the 2.2 release.
Update documentation.
Update news to version 2.3
Clarify misleading statement about log_duration.
Change download location to SF as github is no longer offering fileupload/download feature.
Update feature list on main page.
Add latest new on pgbadger 3.0.
Update copyright year on footer
Rewrite last news.
Add v3.1 news.