Unicode Support

NetCDF supports unicode characters (no encoding specified though -_-)
From the standard:
  Note on char data: Although the characters used in netCDF names must
  be encoded as UTF-8, character data may use other encodings. The
  variable attribute “_Encoding” is reserved for this purpose in future
  implementations.

This adds some degree of unicode support to petulant bear.
What still needs to be done is determining proper character encodings.