update brokit package name and version requirement 

~~**NOT READY FOR MERGE**: currently testing update of package name against a burrito-fillings pull request. Once these tests complete successfully, will do a burrito-fillings release, and then update the required version here.~~

This is ready to merge when the tests pass. The current tests are pulling ``burrito-fillings 0.1.0`` from pypi.

Partially addresses #1716.
This will be updated as part of #1708.