Add start of instance-based state / transitions.
Merge branch 'master' of github.com:Pylons/substanced
Merge branch 'master' of github.com:Pylons/substanced
Merge branch 'master' of github.com:Pylons/substanced
Merge branch 'master' of github.com:Pylons/substanced
Remove the ability of _folder_contents to accept a string parameter for sort_index.
Fix coverage
Fix workflow tests' import
Merge remote-tracking branch 'origin/master' into ree-build-resources-allin