Document release process

Author: piegamesde

MAINTENANCE.md

@@ -0,0 +1,14 @@
+<!-- © 2023 piegames <[email protected]>
+   -
+   - SPDX-License-Identifier: MPL-2.0
+   -->
+
+# Maintainer documentation
+
+## Making a new release
+
+- Check the commit log if anything is missing from the change log.
+- Check dependency versions in `nixfmt.cabal`, bump upper bounds if possible.
+- Bump the version.
+- Give it a git tag.
+- Upload to hackage using `cabal sdist`. See https://hackage.haskell.org/upload for details.

README.md

@@ -48,11 +48,6 @@ Haskell dependencies will be built by Cabal.
 * `nixfmt file.nix` – format the file in place
 
 
-## For Contributors
-
-We welcome issues and pull requests on GitHub.
-
-
 ## About Serokell
 
 `nixfmt` is maintained and funded with :heart: by