rorcid v0.6.0

NEW FEATURES

• orcid_citations() gains new internal function extract_bibtex to attempt to better parse bibtex (#74) thanks @RLumSK
• orcid_search() gains new parameter affiliation_org to search by affiliation organization name, and parses affiliation_org output (#75)
• orcid_search() gains new parameters ringgold_org_id and grid_org_id, as well as parsing those outputs if present (#76)

MINOR IMPROVEMENTS

• clarify names of variables to store the ORCID API token (#71) thanks @fmichonneau
• dont run tests if ORCID token not found (#79)

BUG FIXES

• fix to orcid_search(): parsing issues were fixed by giving default NA's when no results found for certain result sections (#72)
• tests now using cached requests/responses via vcr (#73)
• orcid_search() fix: orcid-identifier.path was not returned when no results found; now we check for that in the results, and return an empty tibble if not found (#75)
• in orcid_search(), keywords have to be passed as multiple instances of keyword rather than as keywords; fixed now; user facing still just uses keywords as the input param (#77)