v6.7.0

• deprecated getPotentials() - please just use checkOne() or checkAll() instead - but I will not remove it, reasoning behind this is that inside this requires a filter to check is a potential returned body not being itself. so when you get 1000 potentials you will iterate over that twice
• optimized checkOne() and checkAll() to not use getPotentials() inside
• fixed drawBVH() to draw more, what I believe now is the full hierarchy of boxes (see demos - checkbox draw BVH)
• checkOne and checkAll both now accept a function that returns boolean, if it returns true, then the checking is ended (this was already for checkOne but not for checkAll)
• setAngle/setOffset returns the Body, like it should since it extends SAT.js
• ellipses are isCentered = true, makes sense
• added a few more tests ("Box even without inserting to system, gives collision results", others)
• improve FPS counter in demos to check every second (more accurate)
• reduce library size by removing demo from bundled files
• readme part about benchmark updated, removed part about getPotentials(), other improvements/updates to readme
• remove too often getOffsetWithAngle() (optimization)
• optimize ensureConvex()
• triangles are isConvex = true
• export SATPolygon from SAT.js so it can be used by consumer of this library
• fix: moving concave polygon (#43)
• feat: optimize raycast to reuse same ray and not create Lines everytime
• fix: rbush.toJSON, fromJSON functionality