in order for people to extend the GeoExt.data.LayerModel, we need to use inheritableStatics for the static function and we need to make sure that inside of the static function createFromLayer we access a static function i.e. getProxy instead of the member proxy
Merge pull request #203 from bartvde/layermodel

in order for people to extend the GeoExt.data.LayerModel, we need to use... (r=@juliensam)
minor update to the README
Add and use a base class for mappanel sliders.

This reduces the amount of copied code and reuses the methods from the
base class.
Merge pull request #204 from marcjansen/refactor-slider

Add and use a base class for mappanel sliders. (r=@bartvde)