* Get rid of utils
* Clean up imports
* Move some utils here
* Rename file
* Add simname to boxsize
* Add imports
* Delete old files
* Update README
* Update imports
* Add a new draft of the density calculator
* Update fields
* Draft of new density field calculatiosn
* Add snapshot
* Add boxsizes
* Little updates
* Bring back utils
* Edit docstrings
* Edits imports
* Add progress on snapshots
* edit improts
* add basic snapshot catalogue
* Add support for CSiBORG2 snapshot reader
* add paths to fofcat for csiborg2
* Add more imports
* Add more boxsize
* Add more imports
* Add field readers
* Simplify field paths
* Fix typo
* Add observer vp
* Clean up density field calculation
* Add a short note
* Edit args
* Remove old comments
* Edit docs
* Remove blank line
* Stop flipping RAMSES
* Remove comment
* Edit desc
* Remove normalization
* Remove old dist array
* Remove non-volume weighting
* Remove non-volume weight
* Add ignore of flake8 notebooks
* Fix path typo
* Fix units
* Edit paths docs
* Update nb
