attempt to fix #175#176

oscarhiggott merged 3 commits intooscarhiggott:u/oscarhiggott/handle-boundary-edge-component-and-refactoroscarhiggott/PyMatching:u/oscarhiggott/handle-boundary-edge-component-and-refactorfrom

noajshu:masternoajshu/PyMatching:masterCopy head branch name to clipboard