Move the mass and initial speed to constants defined at top of class.
Re-generated project using gdx-setup.jar.  Renamed game to kinetic.
Restore the title, width, and height settings.
Moved game screens to new package ca.sumost.kinetic.screen.
Move gas code to new package.
Moving screen classes.
New GameScreen, able to add circles.  However, the viewport is not square so the circles are rendered as ovals.
Fix issue of viewport aspect ratio: circles are now circles.
Add ability to fling and delete ball.
Add ability to insert (invisible) "ground" chains.
renamed:    core/src/ca/sumost/kinetic/editor/ObjectFactory.java -> core/src/ca/sumost/kinetic/editor/BodyFactory.java
Render ground.  Change all rendering from filled to line rendering.
renamed:    core/src/ca/sumost/kinetic/Renderable.java -> core/src/ca/sumost/kinetic/RenderableBody.java
Render the about-to-be-created chain as the user drags.
Do no updates if GameScreen is not active.
Implement rudimentary zoom capability for scroll wheel.
Implemented primitive pinch-zoom.
Move queryPoint() into WorldEditor.
Render chain in Color.GRAY.
Using Viewport.