* Changed default foreground model.
* Increased accuracy of SHT.
* Changed default signal parameters.
Merge branch 'master' of github.com:jrs65/simulations_21cm

Conflicts:
	simulations/corr21cm.py
Merge branch 'master' of github.com:jrs65/simulations_21cm
Merge branch 'master' of github.com:jrs65/simulations_21cm
Merge branch 'master' of github.com:jrs65/simulations_21cm
* Fixed bug when using newer versions of healpy.
Merge branch 'master' of github.com:jrs65/simulations_21cm

Conflicts:
	simulations/galaxy.py