note that we remove links between GO terms that are across GO domains (e.g. no CC to MF relations)
The only supported relations are those that match this regex;
"^(is_a:|relationship: part_of|relationship: regulates|relationship: positively_regulates|relationship: negatively_regulates)"
go_obo(f, rename_namespace = TRUE, remove_obsolete = TRUE)
tibble with ontology terms and their relations
full path to go.obo file stored on the computer, e.g. previously downloaded from http://current.geneontology.org/ontology/go.obo . Also works with a gzipped file; obo.gz
boolean; rename official namespace values like 'cellular_component' to CC? (analogous for BP and MF)
boolean; remove obsoleted terms?