Environment Improvements

New environments and benchmark experiments we would like to add.

These are the things we would like to implement:

• Make dataset to test compositional objects #compositional
• Set up Environment that allows for object manipulation #goalpolicy
• Set up object manipulation benchmark tasks and evaluation measures #goalpolicy
• Create dataset and metrics to evaluate categories and generalization #generalization
• Create dataset and metrics to test new feature-morphology pairs #featsandmorph

Please see the instructions here if you would like to tackle one of these tasks.