* Option for custom encryption key using environment variable `ENCRYPTION_KEY`.
0.2.29
* Use a fixed schedule instead of random schedule. A asset + check combination now also runs on an exact interval.
0.2.28
* Update `requirements.txt` with latest cryptography library _(v39.0.1)_.
0.2.27
* Only JSON dump to _stdout_ for easy dumping output to file.
0.2.26
* Improved start logging with _dry-run_ info.
0.2.25
* Implement `MAX_CHECK_TIMEOUT` for an absolute maximum timeout _(useful when having a very large interval)_. * Implement `DRY_RUN` for running a single check without actually sending the check data.