Initial commit -- analysis scripts.
Initial commit
Initial commit.
Added sinks module to __init__.py
Fixed bug in hdf5 file close method.
	modified:   gadgetHDF5.py
New module (xdmf) for generating xdmf wrappers for hdf5 files.
Module added to __init__.
	modified:   __init__.py
	new file:   xdmf.py
Stopped tracking .gitignore
Begin tracking XDMF template file.
	new file:   gadget.lxmf
New script for analyzing sink data output by gadget.
	new file:   sinks.py
Updated gadget xdmf template file.
	modified:   gadget.lxmf
Added units/constants for easy access from scripts.
	modified:   __init__.py
	new file:   constants.py
	new file:   units/__init__.py
	new file:   units/cgs.py
Added new get() method to class HDF5Group.
	modified:   gadgetHDF5.py
Restructured gas_phase.py to use the pyGadget package.
Making sinks.py into something useable -- checkpoint.
Making sinks.py into something useable -- checkpoint.
New class SingleSink in sinks module.
	modified:   sinks.py
SingleSink class extended to allow choosing sink by formation order.
	modified:   sinks.py
Added extra time conversions to cgs.
	modified:   units/cgs.py
Moved units/cgs.py to units.py and added more conversion factors.
Added Methods for returning standard particle data to class PartTypeX.