Port to Oreo

[AdamNiederer]

Register a notification channel for the overlay notification, add a build flavor, and use newer versions of Gradle and build tools

Tested with a Nougat device and Oreo emulator

[smichel17]

Thanks, I appreciate this! I have a really busy week right now so I probably won't find time to review this until next Monday or Tuesday.

[AdamNiederer]

No problem. I'll try to fiddle with Travis to make it build in the mean time.

[smichel17]

Hi, sitting down to look at this now. While you're here, I'd appreciate if you have any feedback on your experience getting into the Red Moon code base.

Long-term, I'm interested in getting another maintainer (or few), to make sure the project doesn't die if something happens to my availability. That starts with people making small contributions, so I want to make that as easy as possible.

Thanks!

[AdamNiederer]

I've addressed each comment, and threw in a few boring IDE fixes. I just flashed my phone to Oreo, so I only tested 1537b7b on an Oreo device and Oreo emulator. You might want to squash the commits, because a few of them were just to push things through Travis.

[smichel17]

Sorry this took so long to merge. I was going to clean up a few things, but then forgot. Figure I'll merge now and clean up after :)

I also added you as a collaborator for the repo, so you can make tweaks if you find something that's broken on Oreo (or elsewhere). Feel free to push directly or open PRs if you want me to look it over, first.

[AdamNiederer]

Thanks! I'm sure I'll be back with more.

[smichel17]

I'll also add: I'm willing to walk you through the whole code base, if you're interested. It would probably get me back into working on Red Moon more, too :P