scholar 0.2.2

• return NULL if fail to access data (follow CRAN policy)
• restore pubid (@conig, #97)
• extending get_profile(id) to include professional interests (@TS404, #95)
• allow n_deep = 0, for immediate author network (#timonelmer, #90)

scholar 0.2.0

• set_scholar_mirror to allow user to set a google scholar mirror (2021-01-04)