Riptable

What's Changed
* Make all usages of numba respect the global setting controlling caching by jack-pappas in https://github.com/rtosholdings/riptable/pull/251


**Full Changelog**: https://github.com/rtosholdings/riptable/compare/v1.2.0...v1.2.1

What's Changed
* fix docstring by OrestZborowski-SIG in https://github.com/rtosholdings/riptable/pull/242
* Make rolling_mean window required kwarg by OrestZborowski-SIG in https://github.com/rtosholdings/riptable/pull/246
* Ismember more general by eoincondron in https://github.com/rtosholdings/riptable/pull/197


**Full Changelog**: https://github.com/rtosholdings/riptable/compare/v1.1.4...v1.2.0

Consolidate string-handling functions in numba to eliminate redundant code.