sceneloader_assimp2json: check on mesh size.
sceneloader: accept loader function as format hint.
assimp2json: accept parsed JSON-DOM as input, some refactoring and loop speed improvements.
filesystem: if error callback is not given, call success callback with a null.
sceneloader: add error callback.
vertexbuffer: formatting.
core: update API listing.
Merge branch 'master' of github.com:acgessler/medea.js