Please review and upload mgba (0.8.1+dfsg-1)

[Ryan Tandy <ryan@nardis.ca>]

Hello,

Thanks Markus for adding me to the salsa team. I have pushed all my 
changes to <https://salsa.debian.org/games-team/mgba>.

The package is ready for review. I will need a sponsor to upload it.

I created debian/gitlab-ci.yml, but I don't have access to the 
repository settings to configure CI/CD. Could someone with more access 
please configure the repository so it picks it up at that path? 
(https://wiki.debian.org/Salsa/Doc#Running_Continuous_Integration_.28CI.29_tests)

I have tested all three frontends (SDL, Qt, and RetroArch) in an 
up-to-date unstable chroot.

Thank you,
Ryan