choderalab/assaytools: 0.2.0 experimental release

Adds many new features, some of which are still undergoing active development

• Quickmodel feature for automating direct binding affinity analysis for fluorescence assays
• General numerically stable competitive binding model for arbitrary number of ligands
• Some notebooks for modeling of competition assays
• Start of an experimental autoprotocol approach to specifying complex assay configurations; still under development