v0.3

• Update hello world for js->py->js roundtrip.
• Better control over created geometry.
• Mouse pos adjusted for scene graph relation.
• CEFPanda.node(): return self._cef_node
• Drop mouse events outside of actual browser window.
• Mouse pos transformation now respects the card's size.
• Setting browser size respects card size.
• Add mouse position example

v0.2

Fix bad set_browser_size() call