site:

Restore the original numpy-based SiteCollection `expand` algorithm.

While slower than a plain Python implementation with small datasets,
the advantage of numpy really shows through with larger datasets.

I've been meaning to reverse this change for a while, since I found
in profiling run that this change was indeed not faster.
added point rupture scaling relationship and updated tests
updated Peer tests to make use of PointMSR
added note to doc
updated doc file
Merge pull request #138 from monellid/point_rup_scale_rel

Magniture-Area scaling relationship to mimic point ruptures
Merge pull request #136 from larsbutler/undo-false-optimization

Undo a false optimization in the SiteCollection.