Particle-tracking-manager

What's Changed
* Updates by kthyng in https://github.com/axiom-data-science/particle-tracking-manager/pull/19
* Now initialize all class attributes with None and removed usage of `hasattr` which simplifies and clarifies some code.
* Improved handling of `start_time`, `end_time`, `duration`, and `steps` in `manager.py` which fixed a bug in which users couldn't input `start_time` and have the simulation run successfully.
* simplified handling of `horizontal_diffusivity` in `opendrift` model.
* user can change `end_time`, `duration`, and `steps` and have the others update accordingly. Tests added to check this.
* changed known model "CIOFS_now" to "CIOFSOP" to avoid upper/lower issues and include "OP" for "operational".
* many more tests and improved behavior for attribute checks and updates


**Full Changelog**: https://github.com/axiom-data-science/particle-tracking-manager/compare/v0.6.0...v0.7.0

* is set up to tell `opendrift` ROMS reader to save the interpolator to a cache that is set up the first time it is run. This only works with the newest dev version of `opendrift` at the moment, and the files saved are hundreds of MB, but it speeds up the simulations pretty well (12 to 30 seconds).
* reworked which variables are dropped in which scenarios for `opendrift` and integrated with using wetdry vs static masks.
* added package `appdirs` to manage the cache for storing interpolator pickles.
* fix to CLI so duration input is formatted correctly.
* can now input `name` to accompany user-input `xarray Dataset` for `ocean_model`.
* added `ocean_model` "CIOFS_now" local and remote links.

* updated to using version of `opendrift` in which you can input an xarray Dataset directly
* added new parameter for built-in ocean_models to specify whether to look locally or remote for the output (`ocean_model_local`)
* added local model output information for known models using parquet files for kerchunk access to model output
* changed `max_speed` parameter, which controls buffer size in `opendrift`, to 2 from 5.
* improved handling of "steps", "duration", and "end_time" parameters.
* improved reader interaction and speed with `opendrift` by dropping unnecessary variables from ocean_model Dataset, separating out the `standard_name` mapping input to the ROMS reader in `opendrift`, added option for whether or not to use wet/dry masks in ocean_model output if available

**Full Changelog**: https://github.com/axiom-data-science/particle-tracking-manager/compare/v0.4.0...v0.6.0

What's Changed
* updated config, ptm entry point, more logic for parameter combinations, docs by kthyng in https://github.com/axiom-data-science/particle-tracking-manager/pull/14


**Full Changelog**: https://github.com/axiom-data-science/particle-tracking-manager/compare/v0.3.2...v0.4.0

What's Changed
* added lines to setup.cfg for config files by kthyng in https://github.com/axiom-data-science/particle-tracking-manager/pull/13


**Full Changelog**: https://github.com/axiom-data-science/particle-tracking-manager/compare/v0.3.1...v0.3.2

What's Changed
* updated setup.cfg by kthyng in https://github.com/axiom-data-science/particle-tracking-manager/pull/12


**Full Changelog**: https://github.com/axiom-data-science/particle-tracking-manager/compare/v0.3.0...v0.3.1