Add the 'incubating' tooltip after generating the table of contents.
Replace the incubating marker early and add the tooltip late, so that table of contents and generated ids don't include either the incubating marker or the generated tooltip.
Fixed reset of deprecation and incubating messages.
Copy any child markup of h3 elements into the corresponding table of contents links.
- Added note mentioning that plugins can be applied to gradle and settings objects.
- Added todo to mention renamed `add()` methods.
- Removed custom tooling models as a feature. It's not ready yet.