* Introducing support to Melnor RainCloud sprinkler systems
* Make monitored_conditions optional for sub-components
* Part 1/2 - Modified attributes, added DATA_ constant and using battery helper
* Part 2/2 - Refactored self-update hub
* Fixed change requested:
- Dispatcher signal connection
- Don't send raincloud object via dispatcher_send()
- Honoring the dynamic scan_interval value on track_time_interval()
* Inherents async_added_to_hass() on all device classes
* Makes lint happy
* * Refactored RainCloud code to incorporate suggestions.
Many thanks to @pvizelli and @martinhjelmare!!
* Removed Entity from RainCloud sensor and fixed docstrings
* Update raincloud.py
* Update raincloud.py
* fix lint
Marcelo Moreira de Mello