Post 3.4.0 / 4.1.0 cleanup

[tremble]

SUMMARY

• Refresh RST docs (just takes the opportunity)
• Merge in release notes from 3.4.0
• Merge in release notes from 4.1.0
• Clean up changelog fragments from features/fixes released in 4.1.0

ISSUE TYPE

• Docs Pull Request

COMPONENT NAME

ADDITIONAL INFORMATION

This deliberately leaves the Python 3.6 deprecation changelog fragment in place, for additional visibility once 5.0.0 is released.

[ansibullbot]

@tremble This PR was evaluated as a potentially problematic PR for the following reasons:

• More than 50 changed files.

Such PR can only be merged by human. Contact a Core team member to review this PR on IRC: #ansible-devel on irc.freenode.net

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[softwarefactory-project-zuul]

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✔️ ansible-test-sanity-aws-ansible-2.12-python38 SUCCESS in 9m 17s
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✔️ ansible-test-units-amazon-aws-python39 SUCCESS in 6m 54s

[softwarefactory-project-zuul]

Build succeeded (gate pipeline).

✔️ ansible-galaxy-importer SUCCESS in 4m 11s
✔️ build-ansible-collection SUCCESS in 4m 53s
✔️ ansible-test-sanity-aws-ansible-python38 SUCCESS in 8m 37s
✔️ ansible-test-sanity-aws-ansible-2.12-python38 SUCCESS in 8m 12s
✔️ ansible-test-sanity-aws-ansible-2.13-python38 SUCCESS in 10m 24s
✔️ ansible-test-units-amazon-aws-python38 SUCCESS in 6m 34s
✔️ ansible-test-units-amazon-aws-python39 SUCCESS in 5m 53s