Waiting on Alex' input for #43
Waiting on Alex' input for #43

Splitting genepheno_relations table into genepheno_causation and
genepheno_association results in a lot of duplicate code

HazyResearch/dd-genomics,HazyResearch/dd-genomics,HazyResearch/dd-genomics,HazyResearch/dd-genomics,HazyResearch/dd-genomics