Fletchck

Added

- Changelog based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
- Mqtt action for single-fire notifications to mqtt
- Mqtt client library for remote action monitoring
- Remote check type with mqtt updates
- Disk space check
- Publish option for mqtt monitoring

Changed

- Alter sms formatting for easier reading
- Alter ssh check to save host key on first run
- BaseCheck includes a subType for remote checks

Deprecated

Removed

Fixed

- Sequence fail state ordering corrected to match priority
- Fix minor logic issues in actions
- Set fail state before running quit command to avoid false positive
in imap and smtp checks to servers that drop connections before
fully replying

Security

Changed

- Failstate for checks may be any type, not just boolean
- Notify on change of fail state, not just truth value
- Set sequence fail state based on which units are failing
- Use create_connection for TCP sockets so IPv6 addrs may be entered
- Suppress self from lists of available dependencies and sequence items
- Replace option/select form elements with select buttons

Added

- Basic serial UPS checks (Ninja/QsV)
- Provide a fallback "sendmail" emailer if available on the host system

Fixed

- Fix typo and id errors on html form elements

Changed

- Log failing checks as WARNING

Fixed

- Fix timestamp in email notifications
- Fix typo in manual email test

Added

- Granular timezone support
- Add priority field to options for ordering

Fixed

- Fix typo on certificate expiry check
- Correct option names for https check

Initial Release, basic application outline with working
scheduler and user interface.