v0.4.0

Full Changelog: v.0.3.0...v0.4.0

Updates:

• Renamed src root directory to posebench to support pip packaging
• Updated dataset documentation in README.md

Additions:

• Added and documented pip installation option
• Added mmCIF to PDB file conversion script
• Added apo-to-holo predicted protein structure accuracy assessment and plotting script
• Added support to notebooks/dockgen_inference_results_plotting.ipynb for analyzing the protein-ligand interactions within the PDBBind 2020 dataset's experimental structures