BluePy was originally included as a submodule because the version on pip (1.0.5) was too low for Ganglion. With the merge of pull request #96 , we no longer include this submodule.
In requirements.txt we still specify bluepy==1.0.5. This should be changed to bluepy>=1.0.5, or something similar with the minimum version that works with Ganglion as our minimum version.