Move to pygeos for spatial functions.

[jpprins1]

• Performance with pygeos is way better.
• Shapely also gives errors sometimes:

Exception ignored in: <function BaseGeometry.__del__ at 0x000001A5586990D0>
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\envs\py39_env\lib\site-packages\shapely\geometry\base.py", line 209, in __del__
    self._empty(val=None)
  File "C:\ProgramData\Anaconda3\envs\py39_env\lib\site-packages\shapely\geometry\base.py", line 199, in _empty
    self._is_empty = True
  File "C:\ProgramData\Anaconda3\envs\py39_env\lib\site-packages\shapely\geometry\proxy.py", line 44, in __setattr__
    object.__setattr__(self, name, value)
AttributeError: can't set attribute

[caspervdw]

Note that pygeos is now merged into shapely (shapely 2.0)