Module refactor#1

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theodox wants to merge 18 commits intomasterfrom

module_refactor

Commits on Mar 22, 2020

move math funcs into class header
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Commits on Mar 29, 2020

Commits on Apr 4, 2020

fix indenting on while loops
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Commits on Apr 5, 2020

Commits on Apr 19, 2020

add 'get signature'
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Dount use [NEG] for literal assignments
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prepass tests
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more annotations
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