Add newline to HISTORY.rst (SFDO-Tooling#2165)

Merge pull request SFDO-Tooling#2136 from SFDO-Tooling/feature/3.22

Prepare 3.22.0

Merge pull request SFDO-Tooling#2125 from SFDO-Tooling/feature/3-21-1…

…-dev0

Update to version: 3.22.0.dev0

Merge pull request SFDO-Tooling#2107 from SFDO-Tooling/feature/3.21.1

prepare 3.21.1

Merge pull request SFDO-Tooling#2098 from SFDO-Tooling/feature/3.21.0

prepare 3.21.0

Merge pull request SFDO-Tooling#2073 from SFDO-Tooling/feature/3.20.1

prepare 3.20.1

Merge pull request SFDO-Tooling#2065 from SFDO-Tooling/feature/3-20-0

CumulusCI Release: 3.20.0

Merge pull request SFDO-Tooling#2055 from SFDO-Tooling/feature/2gp-de…

…vhub-from-sfdx

Changes to orgs used by create_package_version

Merge pull request SFDO-Tooling#2028 from SFDO-Tooling/feature/brando…

…n/automerge-updates

CumulusCI Release Branches

Merge pull request SFDO-Tooling#2034 from SFDO-Tooling/feature/3.19.1

Prepare 3.19.1