* pr/16575:
  Polish

See gh-16575

Closes gh-16576

Closes gh-16579

Closes gh-16548

Closes gh-16466

See gh-16178

Closes gh-16490

* pr/16515:
  Add tests for CompressionConnectorCustomizer

Closes gh-16515

Closes gh-16566

This commit improves the detection of a property source when more than
one group with the same type exist.

Closes gh-16549

The move to an HTTPS URL for the xmlns:xslt identifier has the unwanted
side-effect of disabling indentation.

This commit moves back to an HTTPS URL. It also changes the indent size
to 2, aligning with the size used by all the other poms that are written
by the flatten plugin.

Closes gh-16466

* pr/16527:
  Fix package of java.time.Duration in documentation

Closes gh-16527

Closes gh-15378

See gh-16458

This commit improves type resolution for a unresolved generic type that
uses itself in its upper bound declaration.

Closes gh-16451

Closes gh-16442

Closes gh-16458

Increase the timeout used when checking if artifacts have landed in
Bintray from 20m to 40m. Also added some additional protection against
the curl command failing.

Closes gh-16443

Closes gh-16425

Close gh-16425