Puppetboard

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* Add new **Classes** view. This view lists the Puppet classes that have had at least one of their resources changed (event). ([799](https://github.com/voxpupuli/puppetboard/pull/799)).

Big thanks to [Louis Charreau](https://github.com/lcharreau) who contributed the above feature!

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* Fix auto-resize in the Radiator view in offline mode ([718](https://github.com/voxpupuli/puppetboard/issues/718)).

Thanks to [René Hernandez 2nd](https://github.com/REHICode) who contributed to this release!

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* **Really** fix starting the app when the SECRET_KEY is set to `bytes` instead of `str`. ([741](https://github.com/voxpupuli/puppetboard/issues/741)).

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* Fix starting the app when the SECRET_KEY is set to `bytes` instead of `str`. ([741](https://github.com/voxpupuli/puppetboard/issues/741)).

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* Sort 'uptime' fact values correctly again - it was fixed in v3.4.0 but got broken in v4.1.0 ([469](https://github.com/voxpupuli/puppetboard/issues/469)).

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* Showing debug messages using a different color than the error messages in the Logs of the Report view. (PR [725](https://github.com/voxpupuli/puppetboard/pull/725))
* Start warning that the default SECRET_KET will not be provided starting with Puppetboard 5.x - see issue [721](https://github.com/voxpupuli/puppetboard/issues/721) for more info. (PR [#726](https://github.com/voxpupuli/puppetboard/pull/726))

Thanks to the contributor of this release, [Shawn Toffel](https://github.com/shawntoffel)!