MAINTAINER.md - Massive additions.

Lots of new sections added to list all the previously missing steps.
List of tools used to work on Autopoweroff also added.

doc/MAINTAINER.md

@@ -0,0 +1,67 @@
+Maintenance manual of Autopoweroff
+======================================================================
+
+This document describes how to maintain the project.
+
+
+Perform a release on GitHub
+======================================================================
+
+Preliminary steps
+-------------------------------------------------------------------------
+
+1. Ensure that the copyright year is properly setup in `configure.ac`:
+
+  AC_COPYRIGHT([Hans Deragon, Copyright 2003-2020, GPL 2.0])`
+
+1. Add a new entry in `doc/CHANGELOG.md`
+
+1. Ensure that `doc/README.md`'s title *Status as of...* has the current year.  Regenerate documentation by running:  `doc/generate-doc`
+
+1. Update in this document, `MAINTAINER.md`, section *Tools used to manage Autopoweroff* if needed.
+
+1. Checking all the above document changes.
+
+1. Assuming that these are the last changes for the release, merge to branch *master* and tag the release with its version number.
+
+Creating the binaries
+-------------------------------------------------------------------------
+
+1. Run:
+
+  ```
+aclocal
+automake
+autoconf
+configure --prefix=/tmp/autopoweroff
+```
+
+1. Generate binaries with
+
+  ```
+make build
+```
+
+Creating the release
+-------------------------------------------------------------------------
+
+1. Jump to the [Releases](https://github.com/deragon/autopoweroff/releases)
+   pages of Autopoweroff.
+
+1. Click on the <Draft a new release> button.
+
+1. Fill the form.
+
+1. Add the binaries.
+
+1. Click on the \<Save draft\> to save for later or \<Publish release if you are ready\>.
+
+
+Tools used to manage Autopoweroff
+======================================================================
+
+The obvious tools such as Git, Bash, Python, etc... are not listed below; there would be too many.  Instead, only the non too obvious ones are listed here to help out anybody that might be interested how Autopoweroff is being coded.
+
+1. [Glade](https://glade.gnome.org/), a RAD tool to enable quick & easy development of user interfaces for the GTK toolkit and the GNOME desktop environment.
+
+1. [GhostWriter](https://wereturtle.github.io/ghostwriter/), a simple but reliable Markdown editor.