Test pipeline fixes and refresh. (AcademySoftwareFoundation#1305)

Remove obsolete CREDITS file. (AcademySoftwareFoundation#1234)

Set smtp_host as env variable (AcademySoftwareFoundation#1119)

Fix python badge to list all 3.x versions. (AcademySoftwareFoundation…

…#1011)

Fix X window issues in the Docker image. (AcademySoftwareFoundation#1004

)

Notes from Feb 3 TSC meeting. (AcademySoftwareFoundation#923)

Switch to use new Github environment file. (AcademySoftwareFoundation…

…#851)

Finish migrating release pipeline to Github Actions. (AcademySoftware…

…Foundation#762)

Meetings notes from Apr 29 TSC meeting. (AcademySoftwareFoundation#691)

Bump minor version number. (AcademySoftwareFoundation#678)