add polyfitr function and io.py bug fix
bugfixes to phot.py
work around for new units in astropy cosmology v3
bug fix for writetxt and unicode
move iscontainer to utilities
allow RA=24
adding starburst99 template
bug fix
io tweak
add temporary code for reading xidl linelists
change the way artists are stored in plotlines to allow easy removal of them
Add a function to find slit losses, a Schecter function, and an estimate of the density of BX-selected galaxies
cleanup
add class for using Kennicutt luminosity-SFR relations
script tweaks and bug fixes
bug fix
Merge remote-tracking branch 'origin/master'

* origin/master:
  doc tweak
use negative of position angle for THETA_WORLD from sextractor 2.8.6 output - bug in sextractor?
bug fix
move Gaussian to stats from utilities, add function to calculate chi2 probability