in gl-react: the context no longer have {width,height} but have {glSizable} which is an object with a getGLSize function. the size is dynamically calculated in the graph & using gl.drawingBufferWidth / gl.drawingBufferHeight which allows more flexible implementations.
in gl-react-dom: nothing fundamentally changes
in gl-react-native/exponent: Surface no longer takes width/height props! instead, it is just the style object, like any usual React Native view. e.g. you can use flexbox!
some tests still don't pass, got to fix all cases.
however, it's a first step toward better controls of gl calls (and less complexity of that)
the RN impl is a bit more supported to match Exponent implemented subset
