--- COMING SOON ---

* Fix flex_decorator typing issue (flex_decorator_test, cache_test, trace_on_failure_test)

Other classes to maybe add:
* threading/
  * rate limiter (in progress!)
  * watchdog alarm
* file/
  * Abstract file system, mountable system
    => In another library: GCS, AWS, etc file systems.
  * Maybe even tools for talking to Google's damnable Docs APIs?
