Changes up snap logic and cleans up test app #97
Merged
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Creates an abstract class for snapping unblocking the ability to add SnapToGrid logic inside the UI module. It also improves the logic being used for calculating the user bearing to snap properly. Before merging, this PR still needs test added.
btw the reason for the large line change size is the addition of a GeoJSON file (sorry 😄 ).cc: @ericrwolfe @danesfeder @zugaldia