Merge branch 'master' of https://github.com/SlithyMatt/x16-chasevault

Author: SlithyMatt

CONTRIBUTING.md

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+At this time, Matt Heffernan (SlithyMatt) is the only direct contributor to this repository.
+If you want to contribute code, please fork the repo into your own GitHub and submit a pull request with your changes.
+If you want to be a beta tester, simply download the latest release and submit any issues you find.
+Please check the backlog of issues first, to prevent duplicate issues. Fixes will be initially pushed to the master
+branch prior to the next release build for community verification. Interim builds will not be produced, so verifiers will
+need to build the master branch themselves or wait until the next release build.
+
+If you want to make changes in your fork that significantly change the game to make merger non-trivial, please set up
+any pull requests carefully to make them incremental or prepare to be orphaned.
+
+All contributions must be completely "free software" that can have the [GPL 3 license](LICENSE) applied.
+No copyrighted code or any other type of proprietary media may be added to this repo. No contributors will
+be compensated monetarily for their work, nor is it allowable for this software to be sold for any price.
+
+Thanks, and enjoy!