2.1.0: 
    New release.
2.1.1:
    Fixed netCDF shape (thanks to Bob Drach).
    Fixed bug in THREDDS catalog generator.
2.1.2:
    Fixed bug when PATH_INFO is empty.
2.1.3:
    Allow multiple filters when filtering sequences.
2.1.4:
    Fixed bug in xdr.py (thanks to Gerald Manipon).
