Making glob() available in session/configuration.py allows users of
savefluxes and sfhfromfile to use something like

filename = "eval glob('sfh*.fits')"
sfr_column = 2

to take the star formation history from several files.

Create two custom exceptions.

When one tries to insert something in the database that is already
inside, a DatabaseInserError is raised.

When one asks for something in the database that is not present, a
DatabaseLookupError is raised indicating what was not found.

Now the redshift is an attribute of the SED.

The SED.compute_fnu() no longuer takes redshift and apply_redshift
arguments as the SED is supposed to be redshifted.

The SED.lambda_fnu() method was converted to the SED.fnu property
returning th Fν flux density at each wavelength of the wavelength grid.

Remove the author email addresses from the source files and add a AUTHORS.rst
file with the addresses and current affiliation to make it easier to update
the information.

Also, give copyright to the University of Cambridge and the University of
Crete for code developed by authors working there.

Export the bugs-everywhere content to HTML in bugs directory to allow an easy
read-only view of bug list.

It will make the documentation clearer.

For the creation and analysis modules, move the contents of the
common.py files to the __init__.py.

Move the SED creation modules to pcigale.creation_modules to be more
consistent with the analysis module location.

The quasar contributions must contain the name of the attenuation used
because using several attenuations will lead to a key error when adding
the second quasar contribution.

Class name should be CamelCased, arguments and variable inside functions
should be lower case.

There's no need to put my name in authors when I did not do anything.

Use the new post-fixed key names for contributions.

Manage the bugs / todo with bugs-everywhere [1]. It's less readable but
can export fancy HTML lists.

[1] http://www.bugseverywhere.org/

astropy v0.3 cosmology methods now returns quantities. We keep only the
value to avoid problems in numpy computations.

A table containing the parameters of the best SED for each observation,
as well as the values for the analysed variables for these best SEDs, is
saved.

In the sfhfromfile module, make the SFH normalisation to 1 solar mass
produced at the given age optional. When using pcigale to simulate SEDs,
one may not want this normalisation to happend.

Such SEDs should not be stored in the database (but SEDs made using
sfhfromfile should not anyway be stored in the database). We will have
to make the SED storing optional in the warehouse.

Add a method to generate SED corresponding to a list of modules and
parameter sets, one at a time to the warehouse.

Make the cosmology changeable by importing the desired cosmology in
pcigale.sed.cosmology. If one day the users need to change the cosmology
more easily, make it a configuration parameter of pcigale.

Also warn the user when an output was renamed.