* tag.define now supports a `tagPage` attribute, allowing what page to
send the user to when clicking on a hash tag in the editor
* index.contentPages() and index.metaPages() are convenience wrappers
around the index.tag("page") collection that filter on content and
meta pages respectively.
- Introduced a new `validate` callback for `tag.define`
- Added `index.validateObjects` API to validate and transform objects before indexing.
- Updated relevant documentation and examples to reflect these changes.
* Now also supports setting a custom metatable (replacement of
index.defineTag)
* Load tag.define API on boot so can be used for initial client index
from CONFIG
* Docs and examples
Zef Hemel