taxize v0.8.0

NEW FEATURES

• New data source added: Open Tree of Life. New functions for the data source
  added: get_tolid(), get_tolid_(), and as.tolid() (#517)
• related to above classification() gains new method for TOL data
• related to above lowest_common() gains new method for TOL data
• Now using ritis package, an external dependency for ITIS taxonomy
  data. Note that a large number of ITIS functions were removed, and are
  now available via the package ritis. However, there are still many
  high level functions for working with ITIS data (see functions prefixed
  with itis_), and get_tsn(), classification.tsn(), and similar
  high level functions remain unchanged. (#525)
• EUBON has a new API (v1.2). We now interact with that new API version.
  In addition, eubon() fxn is now eubon_search(), although either still
  work - though eubon() will be made defunct in the next version of
  this package. Additional new functions were added: eubon_capabilities(),
  eubon_children(), and eubon_hierarchy() (#567)
• lowest_common() function gains two new data source options: COL (Catalogue
  of Life) and TOL (Tree of Life) (#505)
• Addded new function synonyms_df() as a slim wrapper around
  data.table::rbindlist() to make it easy to combine many outputs
  from synonyms() for a single data source - there is a lot of heterogeneity
  among data sources in how they report synonyms data, so we don't attempt
  to combine data across sources (#533)

MINOR IMPROVEMENTS

• Change NCBI URLs to https from http (#571)

BUG FIXES

• Fixed bug in tax_name() in which when an invalid taxon was searched
  for then classification() returned no data and caused an error.
  Fixed now. (#560) thanks @ljvillanueva for reporting it!
• Fixed bug in gnr_resolve() in which order of input names to the function
  was not retained. fixed now. (#561) thanks @bomeara for reporting it!
• Fixed bug in gbif_parse() - data format changed coming back from
  GBIF - needed to replace NULL with NA (#568) thanks @ChrKoenig for
  reporting it!