Prepare 3.1.0

Prepare 3.1.0

Merge pull request #187 from adpi2/bump-default-version

Fix CI

Merge pull request #184 from adpi2/fix-ci

Fix CI

Merge pull request #165 from adpi2/fix-134

Fix 134: ignore corresponding internal config

Merge pull request #165 from adpi2/fix-134

Fix 134: ignore corresponding internal config

Merge pull request #162 from scalacenter/skip-submit-tests

Skip submit tests

Merge pull request #146 from averzicco/asynchttpclient

Remove empty line in SubmitDependencyGraph imports

Merge pull request #141 from scalacenter/create-pull-request/patch

Update dist

Prepare 2.2.0