New-DbaAvailabilityGroup - add a test before attempting to add database by @potatoqualitee
Get-DbaNetworkConfiguration: Add OutputType Certificate by @andreasjordan
Update-DbaBuildReference: Add parameter LocalFile for offline update by @andreasjordan
Save-DbaCommunitySoftware - Add file with version information for SQLWATCH by @andreasjordan
Remove-DbaLinkedServer: Add option to drop logins along with the linked server by @lancasteradam
Save-DbaCommunitySoftware - Small fixes and more documentation by @andreasjordan