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CONTRIBUTING.md

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+# Contributing to Notcurses
+
+Your quality contributions are cheerfully appreciated, however small. Example
+code and documentation are especially welcome.
+
+Changes ought reflect the style of the surrounding matter, whether code or
+documentation. The styles used in the C core, the C++ wrappers, and the Rust
+wrappers are quite distinct; use the appropriate style for the language.
+
+New features should have unit tests. It is appreciated if bugfixes have
+unit tests, as well. Wrappers in a new language absolutely must have at
+least some superficial tests (it is not necessary to deeply test the
+underlying functionality in each language). Adding a wrapper implies that
+you're prepare to maintain that wrapper; if you can't maintain it, the wrapper
+will likely be removed.
+
+Escape sequences available from terminfo must not be hard-coded. Routines must
+check to ensure the relevant escape sequence is valid for the current TERM
+definition, and not emit it if invalid. Routines emitting characters beyond
+the 128 elements of ASCII should check for UTF8 availability, and fall back to
+an ASCII equivalent if not present (or return an error).
+
+Run `make test` with your changes, and ensure all tests pass. Run
+`notcurses-demo` as well, if you changes are to the core library or the
+demo code.