0.5.2 2024-08-02

    - Prevented an error reading an ASCII MOC file with an order with
      an empty cell list.  As of MOC 1.1 this should encode the MOCORDER
      if higher than the greatest stored order.  This module does not (yet)
      process this information but it should now be able to read such
      files without error.

0.5.1 2024-07-09

    - Prevented an error when reading an empty ASCII MOC file.

    - Updated a docstring which refered to the now deprecated Astropy
      FITS HDUList.writeto method clobber argument.

    - Skipped calling the Healpy "query_disc" function for catalogs
      if the given radius is zero (or less).

    - "pymoctool" now accepts "-" in place of a filename to read from
      stdin or write to stdout in ASCII format.

0.5.0 2017-05-30

    - Improved speed of MOC generation from catalogs by making use of the
      Healpy "query_disc" function.  Additional optional arguments can be
      given to the "catalog_to_moc" function to control this process.

    - "pymoctool" now checks that a running MOC is present for some commands.

0.4.2 2017-04-19

    - Corrected bug reading MOCs in FITS format on 32-bit systems with
      64-bit NUNIQ columns.

0.4.1 2016-08-08

    - Corrected bug in intersection routine.
    - Added option to skip validation of cell numbers in the "add" method.

0.4.0 2015-11-20

    - Added utility to create MOCs from catalog files.
    - "pymoctool" can now invoke the plotting and catalog utilities.
    - Preserve metadata read from FITS file when constructing new MOC object.

0.3.0 2014-11-14

    - A command line utility "pymoctool" has been included in the package.
    - Additional keywords are now passed to FITS open and writeto functions.

0.2.0 2014-10-10

    - Updated FITS table column name based on the IVOA version 1.0
      MOC recommendation.
    - Defined addition, equality and subtraction operations.
    - Added clear, contains, flattened and intersection methods.
    - Added plotting utility based on Healpy.

0.1.0 2014-05-27

    - Initial release.
