Closes gh-20491

* gh-20436:
  Update versiion of git-properties plugin shown in the docs

Closes gh-20436

See gh-20436

Unfortunately, while redundant for new applications, removing the
leading slash adversely affected existing application upon upgrades as
it caused Liquibase to re-apply every change log.

Closes gh-20177

* gh-20472:
  Improve unused exclusion detection and remove those that are unused

Closes gh-20472

See gh-20472

See gh-4657

Closes gh-20488

Closes gh-20487

Closes gh-20486

Closes gh-20485

Closes gh-20484

Closes gh-20441

Closes gh-20482

Closes gh-20481

Closes gh-20480

Closes gh-20479

Closes gh-20477

Closes gh-20476

Closes gh-20475

Closes gh-20474

Closes gh-20473

Closes gh-20483

Fixes gh-20441

Closes gh-20471

Closes gh-20470

Closes gh-20469

Closes gh-20468

Closes gh-20467

Closes gh-20466

Closes gh-20465

Closes gh-20464

Closes gh-20463

Closes gh-20462

Closes gh-20461

Closes gh-20460

Closes gh-20459

Closes gh-20458

Closes gh-20457

Closes gh-20456