Update CHANGELOG.md

Bump version: 0.12.0rc1 → 0.12.0

Bump version: 0.11.1rc1 → 0.11.1

Merge pull request dbt-labs#974 from fishtown-analytics/0.11.0-changelog

0.11.0 release

Merge pull request dbt-labs#900 from fishtown-analytics/0-10-2-changelog

0.10.2 changelog

Bump version: 0.10.1rc2 → 0.10.1 (dbt-labs#776)

Update CHANGELOG.md

0.10.0 release

Bump version: 0.9.0 → 0.9.1

bump (dbt-labs#574)

bump 090a1 -> 090a2 (dbt-labs#535)