## Description:
More fixes flagged by pylint 2 that don't hurt to have before the actual pylint 2 upgrade (which I'll submit soon).
## Checklist:
- [ ] The code change is tested and works locally.
- [x] Local tests pass with `tox`. **Your PR cannot be merged unless tests pass**
* Initial implementation of Asterisk Mailbox
* Rework asterisk_mbox handler to avoid using the hass.data hash. Fix requirements.
* Handle potential asterisk server disconnect. bump asterisk_mbox requirement to 0.4.0
* Use async method for mp3 fetch from server
* Add http as dependency
* Minor log fix. try to force Travis to rebuild
* Updates based on review
* Fix error handling as per review
* Fix error handling as per review
* Refactor voicemail into mailbox component
* Hide mailbox component from front page
* Add demo for mailbox
* Add tests for mailbox
* Remove asterisk_mbox sensor and replace with a generic mailbox sensor
* Fix linting errors
* Remove mailbox sensor. Remove demo.mp3. Split entity from platform object.
* Update mailbox test
* Update mailbox test
* Use events to indicate state change rather than entity last-updated
* Make mailbox platform calls async. Fix other review concerns
* Rewrite mailbox tests to live at root level and be async. Fixmailbox dependency on http
* Only store number of messages not content in mailbox entity
PhracturedBlue
Ville Skyttä
Fabian Affolter