Merge pull request #3 from CarrieRider/Dev

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Merge pull request #1 from CarrieRider/Dev

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Title Change
Merge pull request #4 from amandagroccia/dev

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Merge pull request #5 from CarrieRider/Dev

Heun's and Euler's Methods Compared
Merge pull request #6 from CarrieRider/Dev

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Set up the huen's trial to use a vector of dt's.
Merge pull request #6 from KellyBlack/Dev

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