chore(version): Add workflow_dispatch #60 (#64)

* fix(version): Change to python-semantic-release #60

* Semantic Version updates were not working when a user merged an update
  into the main branch.
* The cause was a misunderstanding with the selected sem-ver package and
  its capabilities.
* Python-semantic-release has been implemented, with a config file and
  the relekang/python-semantic-release@master GitHub action.
* The setup.py, setup.cfg and sphinx conf.py files now use the
  __version__ style recommended by python-semantic-release.
* requirements_dev.txt now includes python-semantic-release for local
  checks using --noop.
* Automatic-Changelog workflows updates match semantic_release.yaml
  config files.

WIP #60

* fix(version): Typo in setup.cfg fixed #60

setup.cfg has a typo in version_variable =
setup.py:version, docs/source/conf.py:version
, docs should be ,docs

WIP #60

* fix(version): change to chk_bld_stat false #60

python-semantic-release was failing due to check_build_status = true.
False is the default setting.

WIP #60

* chore(version): Add workflow_dispatch #60

Manually running Semantic Release workflow was not possible.

WIP #60

.github/workflows/semantic_release.yaml

@@ -6,6 +6,8 @@ on:
             - main
         types: [closed]
 
+    workflow_dispatch:
+
 jobs:
     release:
         if: github.event.pull_request.merged == true