hmfast.halos.concentration

Concentration-mass relations

`hmfast.halos.concentration.Concentration`	Parent concentration class from which concentration-mass relations inherit.
`hmfast.halos.concentration.ConstantConcentration`	Constant concentration-mass relation.
`hmfast.halos.concentration.D08Concentration`	Concentration-mass relation from Duffy et al. (2008).
`hmfast.halos.concentration.B13Concentration`	Concentration-mass relation from Bhattacharya et al. (2013).
`hmfast.halos.concentration.K11Concentration`	Concentration-mass relation from Klypin et al. (2011).