Update to new copier template, improved parquet handling

What's Changed

• Hydrate copier template by @delucchi-cmu in #70
• Chunked parquet reads by @delucchi-cmu in #71
• Typo fixes by @delucchi-cmu in #72
• Allow read to take a list of columns by @delucchi-cmu in #73
• Merge recent changes for column specification by @delucchi-cmu in #76
• Sprucing up some docstrings by @delucchi-cmu in #74
• Use some pytest fixtures to consolidate tests by @delucchi-cmu in #77
• Black formatting only. by @delucchi-cmu in #78
• Applying RAIL-specific python project template. by @drewoldag in #81

New Contributors

• @delucchi-cmu made their first contribution in #70
• @drewoldag made their first contribution in #81

Full Changelog: v0.8.1...v0.8.1.2