Changes Jun 2011:
-----------------

command_parser.py: import Numeric removed (commented)

extract.py:        more verbose error messages in check_database_file
                   print_lines, core_parameters, split_molecules:  case insensitive tests of filename
                   write_lines_xy:  some more info to stdout
                   core_parameters:  also returns selfWidths from geisa
                   better exception handling / verbose error messages in case of format conflicts/problems
hitran.py:         more verbose line search:  print info on first/last lines accepted			
geisa.py:          more verbose line search:  print info on first/last lines accepted			
                   set_geisa_fields:  also returns column positions for selfWidths
lines.py:          extract subset of lines (xLimits) corrected (utilize numpy.extract)
lbl2xs.py:         return if no lines found
atmos.py:          option for tabular (xy) output without altitude in first column (pT file)

io.py --> IO.py    to avoid name clashes with io modules from standard python and matplotlib libraries


documentation:
added plot_atlas and lineshapes modules to index.html
added some more questions/answers to FAQ


Changes Sep 2011:
-----------------

extract.py:        (no) warning when no wavenumber range is given and database appears to be complete
lbl2xs.py:         more verbose warning if no output file (format) specified
plot_atlas.py:     indicate number of files required


documentation:
expanded documentation of line parameter data
corrected link to GEISA data base
added cgsUnits module to index.html
added some more questions/answers to FAQ
