Rename files
To match GitLab´s file linking, I suggest to rename two files in order to show them at the [start page](https://gitlab.com/fdroid/fdroidclient):
- [`COPYING`](https://gitlab.com/fdroid/fdroidclient/blob/master/COPYING) to `LICENSE`
- [`HACKING.md`](https://gitlab.com/fdroid/fdroidclient/blob/master/HACKING.md) to `CONTRIBUTING.md`
For example at the moment, only [changelog](https://gitlab.com/fdroid/fdroidclient/blob/master/CHANGELOG.md) is detected.
CC @mvdan @pserwylo @CiaranG
issue