Fix importing of tests and installation dirs for data/tests
Merge branch 'master' into testing
Fix the prefix for data files (use distutils.sysconfig value)
Merge pull request #9 from langner/testing

Fix importing of tests and installation dirs for data/tests
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Fix the prefix for data files (use distutils.sysconfig value)
  Fix importing of tests and installation dirs for data/tests