chore: use fider.io instead of getfider.com

chore: update version to 0.19.1

chore: release 0.19.0

fix: fix linter

chore: bump to v0.18.0 (getfider#740)

backport: PR getfider#669 to 0.17.1

chore: bump vesion (getfider#663)

fix: invalid post number should return a 404 and not a 500 (getfider#589

)

chore: remove buildnumber for 0.15 (getfider#505)

chore: update Fider version (getfider#439)