Bumped version to 20200318.1

Merge pull request home-assistant#5252 from home-assistant/dev

20200318.0

Merge pull request home-assistant#5234 from home-assistant/dev

20200316.1

Merge pull request home-assistant#5228 from home-assistant/dev

20200316.0

Merge pull request home-assistant#5198 from home-assistant/dev

20200313.0

Merge pull request home-assistant#5181 from home-assistant/dev

20200312.0

Merge pull request home-assistant#5135 from home-assistant/dev

20200311.1

Merge pull request home-assistant#5128 from home-assistant/dev

20200311.0

Merge pull request home-assistant#5089 from home-assistant/dev

20200306.0

Merge pull request home-assistant#5024 from home-assistant/dev

20200228.0