Try to load _config.yaml if _config.yml is nonexistent.
Merge pull request #2406 from yihangho/config-yaml
Update history to reflect merge of #2406 [ci skip]
Prevent code overflowing container
Remove extra period. [ci skip]
Merge pull request #2429 from jshawl/code-overflow-fix
Update history to reflect merge of #2429 [ci skip]
Merge pull request #2430 from ivantsepp/doc_fix

Extra period in collections documentation