* Update API overview
* Fix global search example
* Fix local search example
* Fix global dynamic example
* Fix drift example
* Update multi-index example
* Semver
* update index api to accept callbacks
* fix hardcoded folder name that was creating an empty folder
* add API notebook
* add semversioner file
* filename change
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Co-authored-by: Alonso Guevara <alonsog@microsoft.com>