Mediawiki-dump

* 50 `dependencies` - Bump libarchive-c from 2.9 to 3.1 (by dependabot[bot])
* 51 `dependencies` - Bump black from 20.8b1 to 21.6b0 (by dependabot[bot])
* 52 `ci` - CI - test using multiple Python versions and cache pip dependencies
* 53 `ci` - Improve CI dependencies cache

* 32 `enhancement` - Do not be so strict on pinned depedencies (by BoboTiG)
* 33 `enhancement` - Add StringDump Class (by e1mo)
* 36 `dependencies` - Bump libarchive-c from 2.8 to 2.9 (by dependabot[bot])
* 39 `pr` - Code linting
* 40 `pr` - Move from TravisCI to GitHub Actions
* 41 `enhancement` - Introduce black formatting
* 42 `enhancement` - Black: use a separated GitHub actions workflow

28 - Introduce `LocalFileDump` and `LocalWikipediaDump`

26 - Expose URL of the currently processed entry

* 25 - Ggraceful handling of failed import of `libarchive`

0467da7 - Fix the way dump response is streamed to a cache file