Release v2.1.2

Fixed db connection has already been bound to another coroutine when …

Release v2.1.0

Changed branch-alias of `dev-master` to `2.1-dev` (#3038)

* Update branch-alias

* Update composer.json

Release v2.1.0-beta1

Merge branch 'master' into 2.1-merge

# Conflicts:
#	.travis.yml
#	composer.json
#	src/json-rpc/src/CoreMiddleware.php

Release v2.0.17

Added workflows to test.

Release v2.0.10

Added auto release. (#2390)

* Update changelog.md

* Added auto release.