* fix anaconda build
* Added link for TKAgg
* Add matplotlib to requirements
We are pulling it in through scanpy, but since we are importing it directly we should include it explicitly
* remove memoization
* update to flash 1.0.2; turn on threading
* stand-alone helper routines for array slicing
* fix issue #405
* reset diffexp state when world changes
* performance work in dimension creation; fix world slicing bug
* update tests to match new state mgmt api
* update flask
* do not make dimensions for useless annotations
* update test to match optimizations
* refactor cli to improve ux and enable easy incorporation of prepare as a subcommand
* switches to use click, which removes some boilerplate and gets us some improved ux for free
* changes the entry point for the cli
* changes the name of the browser option to --open and makes the default false