Code in ./common/lib/xmodule/xmodule should be imported as `from xmodule`, since `xmodule` is a locally-installed package. This is weird, but as long as it is the case, we should be consistent. (In BOM-2584, I propose moving the files to ./xmodule, which would quell this confusion.)
Open EdX Features ----------------- This is the root package for Open edX features that extend the edX platform. The intention is that these features would ideally live in an external repository, but for now they live in edx-platform but are cleanly modularized.