0.9.2

Minor release with minor improvements and bug fixes.

What's Changed

• add sbert example notebook by @cmacdonald in #344
• Update scikit-learn requirement from the deprecated sklearn, which was causing build errors at some times.
• adding batching operations to apply.generic() and apply.by_query() by @cmacdonald in #351 - thanks to Xun Zhou, University of Michigan via #350
• improve error messages for invalid indexing configurations by @cmacdonald in #349 -- thanks to @maxhenze in #348
• Various empty dataframe fixes by @cmacdonald in #353 -- thanks to report by Prithvijit Dasgupta, University of Michigan in #352
• improved error message for add_ranks by @cmacdonald in #354

Full Changelog: 0.9.1...0.9.2