Change step grid#181

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samuel-stahl wants to merge 4 commits intomainfrom

change-step-grid

Commits on Jun 17, 2021

adds new dropdown which changes gridSize in state
InsideOutside0
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Commits on Jun 18, 2021

allows grid size to change from dropdown, still some kinks to work out
InsideOutside0
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Commits on Jul 10, 2021

Merge branch 'main' into change-step-grid
InsideOutside0
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fixes grid sizes and alters coordinate rounding function
InsideOutside0
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