Depend on anvil-parser2 from Pypi instead of Github

[0xTiger]

Thanks for making this @ryan-mooore! I really like the visual style of the mapping! :)

This PR updates the dependencies to use anvil-parser2 from pypi so you no longer have to depend on 0xTiger/anvil-parser from github (anvil-parser2 is exactly the same package I've just chosen to publish it on pypi and name it)

This PR also replaces np.mat with np.asmatrix since with newer versions of numpy I get the error:

generate: (INFO) Reading data from /mc-world/...
Traceback (most recent call last):
  File "/topomc/src/convert_world.py", line 139, in <module>
    "dem": create_mat(np.uint8) if args.compress_height_limit else create_mat(np.int16),
  File "/topomc/src/convert_world.py", line 133, in <lambda>
    create_mat = lambda dtype : np.mat(np.zeros((
  File "/topomc/.venv/lib/python3.9/site-packages/numpy/__init__.py", line 397, in __getattr__
    raise AttributeError(
AttributeError: `np.mat` was removed in the NumPy 2.0 release. Use `np.asmatrix` instead.