Shape:
	isRuler
	New Shapes Ring and Parabola
World:
	grid, comparator
	//removebody and joint null
	collision flagfor superelastic ??
	removeBody() setColliding
	Particle Stuff
	
Joint
	new Joints Spindal , torsion spring
	changes in Distance and rope joint for stability
	chnages in prismatc and wheel jointofr more intutive constructor and anew xis
	translatelocalanchor1 adn2
	renderer,color,opacity and size
	setBody1() setbody2(()
	setColor()
	setVisible
	
Geometry
	Several object creation functions
	methods for parabolic shape
	methods for line
	
	
Collision detection listener 
org.dyn4j.dynamics.contact.DefaultContactManager.updateAndNotify()

Island
	applygravity
	
CategoryFilter
	remove final from category and mask
	setCategory(), setMask()
	
	
org.dyn4j.dynamics.CoefficientMixer
	restitution return Math.min instead of Math.max


DefaultContactSolvdeer
	body.setCollisionInfo

Body
	add getWorld()
	//gravityScale
	add fields CollisonN and isColliding
	add isColliding()
	getMass() rename to getMassData()
	setMass() renamed to setMassData()
	setDefaultAngularDamping 0
	expose contacts to protected 	protected final List<ContactEdge> contacts;

Mass
	getAssignedmass()
	getAssignedIntertia()
	
	
	
	
org.dyn4j.dynamics.Constraint
	add setBody1()
	add setbody2()
	remove final modifiers of body1 and body2
	
Fixture
	add setShape()
Fixture
	sticky isSticky() setSticky()
Vector2
	approxEqual
	getRotated
	getAngleWithXAxis
	addScaled
AxisAlignedAAbB
	clone() method added	
	
org.dyn4j.geometry
	line 140 rotate() to avoid cost>1
	if(cost>1){
			cost=1;
			sint=0;
	}else if(cost<-1){
			cost=-1;
			sint=0;
	}
Bug fixes
  many of them already merged
  
  	
New Mass Type
	Search MassType.Y_MOTION_ONLY for changes
	Body>>apply impulse, getLinearVelocity?,
	Island>>solve
	Sequential Impulse>>> solvePsoitionConstraint, updateBodies, updateBodies
	TimeofImpactSolver
	All Joints>> initialize constraint,SolvePositionConstriant,SolveVelocttyConstarint
	
  body.setLinearVelocity
  body.setmassData, setMasstype  added setLinearVelocity(velocity.x,velocity.y);
  
	
	
Settings: 
	particle settings
	
AABB
	set(float,float....)
	expandToFit(Vector2)
	
Island solver
	averageVelocity