Some notes on this change: Right now downtown Lake Orion has some, but not all sidewalks mapped. I extended sidewalks that just randomly ended, but didn't add any completely new ones. I also reverted bike permissions to defaults in some areas (not specified), as adding bicycle=yes isn't really needed for small sidewalks right next to roads, unless its specifically used for bicycle travel. (In which case it should probably be classified as a (cycle) path vs. a sidewalk)