The extension's columns for the outbox table can now be fully customized by using
build-time configuration properties to influence a column's database definition,
the columns length/precision/scale/nullability as well as specifying a JPA
AttributeConverter. While not all theses options apply to every column, such as
the identifier, the goal is to allow flexibility.
* Removed unnecessary roles and options for many adoc tables
* Fixed various typos
* Added consistent incubating note
* Minor tweaks to several code listings to include caption/titles
* Fixed several rendering bugs with bullet lists not being properly rendered
* Added appropriate source code types to source blocks
