Assess package requirements

[Klankers]

As of September, there are a number of dependencies that may be irrelevant. Check on these following development and make sure that anything unnessesary is removed.

(Bolded items are questionable, not appearing anywhere in github or project files)
Installing collected packages: pytz, distlib, xyzservices, urllib3, tzdata, typing-extensions, tornado, six, PyYAML, pyparsing, pyflakes, pycodestyle, pluggy, platformdirs, pillow, pathspec, packaging, numpy, nodeenv, mypy-extensions, munch, mccabe, MarkupSafe, kiwisolver, isort, iniconfig, idna, identify, fonttools, filelock, cycler, coverage, click, charset-normalizer, cfgv, certifi, virtualenv, scipy, requests, python-dateutil, pytest, mypy, Jinja2, gsw, flake8, contourpy, black, pytest-cov, pre-commit, pandas, matplotlib, ctdcal, bokeh

[Klankers]

Tangentially, the following on a mypy run show up as stale (is this a concern?):

LOG: Processing SCC of size 47 (zipfile typing_extensions typing types sys subprocess sre_parse sre_constants sre_compile resource re posixpath pathlib os.path os io importlib.resources.abc importlib.resources importlib.readers importlib.metadata._meta importlib.metadata importlib.machinery importlib.abc importlib._abc importlib genericpath enum email.policy email.message email.header email.errors email.contentmanager email.charset email._policybase email dataclasses contextlib collections.abc collections codecs abc _typeshed.importlib _typeshed _collections_abc _codecs _ast builtins) as inherently stale