* Add prettier (in pre-commit and CI)

* Make all file prettier

* Change order

* Add to Azure Pipelines

* Fix a YAML file prettier caught as invalid

* Remove flow mapping using curly braces from all YAML service files

* Improve string formatting v4

* Use normal strings instead of f-strings

* Fix zeroconf test by adding back part of a condition

Homekit only has Off/Heat/Cool/Auto at this time, but
at least we can prevent the device from erroring
by mapping dry and fan to cool so it continues
to function.

* Add pyupgrade (in pre-commit and CI)

* Fix leftover results of pyupgrade

* Ensure we run for Python 3.7 on pyupgrade

* Add yamllint (in pre-commit and CI)

* Fix linting for all YAML files

* Bump and add it to requirements

* Fix gen_requirements for pre-commit, remove 'v' from version

* Enable pylint unnecessary-pass

* Process review suggestions

* Fix smhi tests

* Handle float values for homekit lightning

* Empty commit to rerun CI

* Adding OpenERZ integration

* Added unit tests

* Linter fixes, better friendly_name handling

* Increase coverage

* Review fixes

* fixup! Review fixes

* Refactor to use external openerz-api library

* fixup! Refactor to use external openerz-api library

* fixup! Refactor to use external openerz-api library

* fixup! Refactor to use external openerz-api library

* fixup! Refactor to use external openerz-api library

* Removal of extraneous parenthesis

* Process review suggestions

* Apply suggestions from code review

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

* Small code style improvements to Insteon integration

* Update homeassistant/components/insteon/utils.py

Co-Authored-By: Martin Hjelmare <marhje52@gmail.com>

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

* Improve string formatting v3

* Address review comment

* reordered the clearing of the closed Event so it can stay set at the end and not
leave a task waiting on close

* fixed the side effect so it returns one TimeoutError and after that success
Previously it reached the end of the single item list and threw an exception

* fixed the error. it doesn't happen on python 3.7.5 but CI is on 3.7.0

* fixed comment

* Improve string formatting v2

* Improve string formatting v3

* Address review comments