Changes between releases 3.20 and 3.30

* azeqview, cartview, gnomview, mollview, orthview visualization routines:
* addition of PDF keyword for production of Adobe PDF outputs;
* addition of LATEX keyword for genuine or emulated LATEX processing of character strings;
* addition of PFONTS keyword to select origin and type of character font;
* the CROP keyword now has the same behavior for all output media (GIF, JPEG, PDF, PNG, PS, ... and X); the NOBAR keyword now removes the color bar or the polarization color wheel, as applicable; correct EQUINOX date in header of output FITS map; the double precision maps and those with constant value are now correctly handled.
* fits2cl: addition of /PLANCK2 keyword to read best fit C(l) model to Planck 2015 data.
* new routines nest2uniq and uniq2nest for conversion of standard pixel index to/from Unique ID number. See ''The Unique Identifier scheme'' section in ''HEALPix Introduction Document'' for more details.
* HEALPix enabled GDL commands (hgdl and hgdlde) are defined during the configuration process.
* update of the required IDL-astron library routines, and Coyote library routines (2015-09-23).

Version 3.30, 2015-10-08