* rename nb
* add merge func
* rm bug..
* add static methods
* save rmin, rmax
* add properties for box units
* move radial info to the clump
* add Npart explicit
* move where rmin, rmax obtained
* add box cosmo
* add __getattr__
* add comments in units
* add enclosed spherical mass
* rm unused variables
* add clump mass setter
* add the halo index
* add enclosed overdensity
* add enclosed_overdensity
* simplify loss func
* opt result to nan
* change Rs to log10
* change back to attribs
* add H0 and h props
* add setattrs
* Remove global constants
* move Msuncgs above
* add crit density
* add dots
* add r200c and r500c
* add M200 and M500
* make lowercase
* output r200, r500, m200, m500
* update TODO
* update README
* fit NFW only up to r200
* add r178, m178
* add m178, r178
* update TODO