Things to download before the lab session:
========================================================================
========================================================================

* Inside your "codes" directory,

hg clone https://bitbucket.org/ohahn/music

------------------------------------------------------------------------

* Inside your "data" or "simulations" directory,

wget -O cosmology-lab.tgz https://bit.ly/2k4XZ6f

wget -O cosmology-data.tgz https://bit.ly/2k3BDBV

will uncompress into the cosmology-lab/ directory.