* Use `providers.provider` for `modifiedFiles`.
This defers the looking up of `modifiedFiles` until it is used. It
also allows other tasks to be ran from the non-primary work tree.
Working in another work tree is essential for Antora which will clone
each branch/tag into a new work tree to process it.
* Migrate Structure
* Insert explicit ids for headers
* Fix image::image
* Copy default antora files
* Fix indentation for all pages
* Split files
* Generate a default navigation
* Remove includes
* Fix cross references
* Enable Section Summary TOC for small pages
* Polish nav.adoc
* Fix duplicate ids
* Escape {firstname} and {lastname}
* Remove links to htmlsingle and pdf Formats
* Fix broken links
* Disable attributes for ${debezium-version}
* Migrate to Asciidoctor Tabs
* Move to src/reference/antora
* Remove Asciidoctor Build
* deploy-docs only spring-projects
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