* Technically %(class)s can be e.g. A.B not just 'B' so say "name(s)".
* To not confuse EDMCLogging.getLogger() with logging.getLogger() it's
been renamed to get_logger().
* Note how we signal errors with finding class and/or qualname.
* Call out EDMCLogging.py in Contributing.md.
* Add/correct links to Releasing.md.
* Pre-releases must have tags of the correct form now.
* Misc formatting changes, mostly adding a <hr/> between sections.
* Both `stable` and `beta` might contain extra commits for hotfixes beyond
what is currently released.
* Describe the Stable Release tag form, and point out that currently
the pre-release tag form is the same.
* Outlines everything a new contributor should know.
* There's one 'XXX' to-check items with regards to Windows Installer,
and if it does think A.B.C.1 should be installed in place of A.B.C.0.
Closes#533