traits v0.2.0

DEPRECATED

• Marked four functions as deprecated - those involving getting data
  on whether a species if native/invasive in a particular region.
  See ?traits-deprecated for more information. Deprecated functions:
  eol_invasive_(), fe_native(), g_invasive(), is_native() (#63)

MINOR IMPROVEMENTS

• Standardized outputs of all data - all data.frame column names should
  be lowercase now (#47)
• With all httr::content() calls now explicitly setting encoding to
  UTF-8, and parsing to text, then manually parsing either JSON
  or XML later (#65)
• Replaced XML with xml2 for XML parsing (#67)