Addressed issues in map_variables_to_terms to support dictionary of isAbout. Fixed up test: test_map_vars_to_terms.py to test for the two supported JSON sidecar formats #384
fixed up issues with map_variables_to_terms and multiple isAbout concepts
fixed up issues with pytests, dynamic retrieval of github/dbkeator/simple2_NIDM_examples files that don't currently have brain volumes
fixed up lint issues
fixed up issues with map_variables_to_terms and multiple isAbout concepts fixed up issues with pytests, dynamic retrieval of github/dbkeator/simple2_NIDM_examples files that don't currently have brain volumes fixed up lint issues