clusters: Use "hmf" to calculate halo mass functions/distributions

* New dependency "hmf" (halo mass functions) module
* Calculate halo mass distributions/functions (dndlnm) with respect to masses
  and redshifts, instead of use the previous data file ("ps_data")
* New section "[extragalactic][psformalism]" in configurations
* New functions to write and read the dndlnm data

TODO:
* update the method to sample (mass, redshift) for clusters from the dndlnm
  data

1 files changed, 1 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 63ef7b0..00bd96e 100755
--- a/setup.py
+++ b/setup.py
@@ -89,6 +89,7 @@ setup(
         "requests",
         "tornado",
         "reproject",
+        "hmf",
     ],
     dependency_links=[
         "git+https://github.com/astropy/regions.git",