ropensci/taxizedb: taxizedb v0.3.0

NEW FEATURES

• db_download() gains new parameter overwrite (logical): used to state that you want to overwrite an existing database on disk. before this you would have to manually delete an older database file (#34)
• new function added taxa_at() for getting taxa at specific scientific ranks. For example, your known taxon is the family Lachnospiraceae with NCBI identifier of 186803. You want information on the phylum which the Lachnospiraceae family is in. This function can do that for you. (#51)