Feature/uncertainty DO NOT MERGE#2

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ZacharyTaylor wants to merge 6 commits intomasterfrom

feature/uncertainty

Commits on Feb 19, 2017

Commits on Feb 21, 2017

grab sparse_matrix as soon as it is created to prevent race conditions
ZacharyTaylor
committed

Commits on Feb 22, 2017

moved most of calc to interface
ZacharyTaylor
committed

Commits on May 22, 2017

Merge branch 'master' into feature/uncertainty
alexmillane
committed