Open-web-calendar

- Update dependencies
- Improve Belarusian translation by Yauhen, Ukrainian by Максим Горпиніч, Esperanto by phlostically
- Update Security Policy
- Add a way to choose the map, see [Issue 23](https://github.com/niccokunzmann/open-web-calendar/issues/23)
- [Update DHTMLX Scheduler] to v7.2.1
- Introduce, test and document the `OWC_SPECIFICATION` environment variable.

[Update DHTMLX Scheduler]: https://docs.dhtmlx.com/scheduler/what_s_new.html

- Improve gunicorn, PyPI and service documentation
- Update dependencies
- Allow debugging UI tests with screenshots
- Update Italian translation by albanobattistella, German by Nicco Kunzmann, Korean by Paimon (JeaHoon Cha), Ukrainian by Максим Горпиніч, Spanish by gallegonovato
- Fix UI test failures due to race condition when clicking a link
- Improve load times for static files
- [Update DHTMLX Scheduler] to v7.1.3

- Update dependencies
- Use renovate to auto-update dependencies
- Update Spanish by gallegonovato
- Improve funding documentation
- fix: use flask-allowed-hosts because flask-allowedhosts was deleted

- Support `webcal://` links
- Provide docker releases with proper tag release information
- Add choice: Choose the language of the viewer
- [Update DHTMLX Scheduler] to v7.1.1
- Update examples to work with DHTMLX Scheduler v7.1.1
- Add script to automatically [Update DHTMLX Scheduler]
- Update dependencies
- Deprecate Python 3.8
- Add Chinese (Traditional Han script) and Korean
- Update Hebrew by Ori, Chinese (Traditional Han script) by 張可揚, Spanish by gallegonovato, German by Nicco Kunzmann, Slovak by Milan Šalka and Nicco Kunzmann, Croatian by Milo Ivir and Welsh by Siaron James
- Fix links to new location in the `open_web_calendar` subdirectory
- Set `__all__` variable for package export

- Add version to footer
- Allow specifying the version of the software through the `version` parameter
- Fix: show broken calendars again
- Fix: Remove CSS attack from broken calendar sources

- Create [PyPI package](https://pypi.org/project/open-web-calendar/) and deployment
- Update dependencies