v0.4.7

What's Changed: Better Multi-Objective Implementation and Improved Error Handling by @thetianshuhuang:

• ext.objective now supports additional inputs (aux) for each objective.
• Improved error handling and error messages in the case of missing inputs, including #36
• Ignore any parameters which might be part of a processing pipeline for the purposes of model loading / saving

Full Changelog: v0.4.6...v0.4.7