Patch 37

[Quantalabs]

Overview

Adds stochastic modelling support, as detailed in #37, for the comp, com, and pre modules.

Changelist

• Add stochastic modelling to all functions in the pre module
• Add documentation for the new functions
• Add tests for the new feature
• Add new dependency "gaussian".
• Fix a bug in two pre functions
• Fix error in test script, which doesn't detect errors
• Add stochastic models to the sir, seir, and seird functions of the Community class of the com module
• Add new tests for the stochastic models
• Fix formula error
• Fix bug which outputs NaN as value of a population
• Update and fix bug in tests
• Update web/index.min.js with new built code
• Add tests for the new stochastic models in comp
• Add stochastic model support in comp
• Update build with latest functions

Other Notes

Closes #37

[quantum9Innovation]

We'll have to do code review on this later then