finbif v0.6.0

NEW FEATURES

• New variables lat_euref and lon_euref available for occurrence
  record downloads. These new variables represent the central point of
  a bounding box encompassing a record's geographic coverage in the
  EUREF (ETRS89/ETRS-TM35FIN) coordinate system.

• Option now available to retain the TSV data file when loading FinBIF
  occurrence data with finbif_occurrence_load from ZIP archive or
  online reference.

• Option now available to extract "facts" when using
  finbif_occurrence_load to import records from a ZIP archive. The
  user must supply a named list, where the names refer to one or more
  fact types: "record", "event" and/or "document", and the list
  elements are character vectors indicating which "facts" to extract.

• "Lite" download files (occurrence record datasets of less than
  10,000 records downloaded directly from laji.fi) can now be imported
  using finbif_occurrence_load.

• New filters (currently undocumented) ely_center_id and region_id
  are available for finbif_occurrence.

• New function, from_schema, to convert variable names from FinBIF
  schema to other styles.

• New computed variable date_time_ISO8601 (currently undocumented)
  can be selected when creating finbif_occ objects.

• New computed variable epsg (currently undocumented). If selected,
  the column will have the EPSG code of the first column that contains
  geographic data.

MINOR IMPROVEMENTS

• Can now select all available variables when importing a FinBIF
  download request file using finbif_occurrence_load with
  select = "all".

• New option, drop_na, to drop columns that only contain missing
  data added to finbif_occurrence and finbif_occurrence load.

• User can now select columns multiple times and rename them on the
  fly by using a named character vector as the value of the 'select'
  argument.

• The variable taxon_rank is now converted to a string on the fly
  via taxon_rank_id.

• Variables that are computed from their identifiers are now localised
  when multiple languages are available.

BUG FIXES

• Fixed bug that prevented occurrence record counting when caching was
  not in use.

• Fixed bug that triggered an error when selected a variable that had
  to be computed from its ID when using DWC style variable names.