v0.2.3

Added

• This CHANGELOG
• requirements-dev.txt
• Documentation
• Upload built conda environment as an artifact
• Notebook rendering to Github actions, including hash-based artifact checks
• Initial benchmarking tooling, still in progress

Changed

• Moved publishing steps into separate workflows
• Deprecated imports from odc.index.*
• Removed .units attribute from .time axis for better inter-op with .to_zarr, .to_netcdf

Fixed

• Handling of STAC Items with only partial proj data
• Typos in documentation