Merge pull request #464 from carlosms/bump-0.13.0

Bump changelog for 0.13.0

Merge pull request #460 from se7entyse7en/streamlinifier-flaky-test

Fix flaky `StreamLinifierTestSuite/TestSlowPendingMessage` test

Merge pull request #404 from carlosms/bump-v0.12.0

Bump changelog to v0.12.0

Merge pull request #399 from carlosms/changelog-prune

Update changelog for 0.12.0-rc.2

Merge pull request #376 from smacker/engine_state

Engine state

Merge pull request #309 from carlosms/gitbase-v0.19.0

Update gitbase to v0.19.0

Merge pull request #309 from carlosms/gitbase-v0.19.0

Update gitbase to v0.19.0

Merge pull request #306 from carlosms/gitbase-web-0.6.2

Update gitbase-web to v0.6.2

Merge pull request #242 from carlosms/bblfshd-v2.11.8

Update bblfsh to v2.11.8

Merge pull request #228 from carlosms/downgrade-docker-dep

Downgrade docker/distribution dependency to v2.6.2