* Removing obsolete version behavior callout notes - initial pass.
* Fixed example text punctuation.
* Removed old version callout.
* Typo fix
* Updated example
* Fixed awkward sentence
* Fixed incorrect feature name
* Reinstated current version callout
* developing_modules.rst is now in dev_guide, sync changes and delete the old version
* Cleaner RST & formatted code
* Tidyup roadmaps
* Link to repomerge
* Pull in abadger's fixes From https://github.com/ansible/ansible/compare/docs-code-block-fixes?expand=1
* Clean docsite/rst (apart from ROADMAP
