Clean up and Bug Fixes

Fixes #38 (closed)

Further changes:

• Third party warnings are suppressed now as they just polluted the warning summary in pystencils.
• Removing the math optimisations as they are not used in pystencils. An Issue is created to reintroduce them again in a clean way in the future
• Removing the joblib workaround as joblib is a hard dependency of pystencils
• Fixing SymPy 1.9 as maximum version
• Removing sympy.multiply_elementwise due to https://github.com/sympy/sympy/issues/22353. A workaround with NumPy is introduced which seems to be way more robust because NumPy has a more static API
• Introducing more extra requires, which are needed to have all features of pystencils
• Minor cleanup of some test cases and the datahandling

pystencils_tests/test_create_kernel_backwards_compability.py

@@ -5,7 +5,6 @@ import numpy as np
 
 
 # This test aims to trigger deprication warnings. Thus the warnings should not be displayed in the warning summary.
-@pytest.mark.filterwarnings("ignore::DeprecationWarning")
 def test_create_kernel_backwards_compatibility():
     size = (30, 20)
 
@@ -21,9 +20,11 @@ def test_create_kernel_backwards_compatibility():
 
     jacobi = ps.Assignment(d[0, 0], (f[1, 0] + f[-1, 0] + f[0, 1] + f[0, -1]) / 4)
     ast_enum = ps.create_kernel(jacobi, target=ps.Target.CPU).compile()
-    ast_string = ps.create_kernel(jacobi, target='cpu').compile()
+    with pytest.warns(DeprecationWarning):
+        ast_string = ps.create_kernel(jacobi, target='cpu').compile()
     # noinspection PyTypeChecker
-    ast_config = ps.create_kernel(jacobi, config=ps.CreateKernelConfig(target='cpu')).compile()
+    with pytest.warns(DeprecationWarning):
+        ast_config = ps.create_kernel(jacobi, config=ps.CreateKernelConfig(target='cpu')).compile()
     ast_enum(f=src_field_enum, d=dst_field_enum)
     ast_string(f=src_field_string, d=dst_field_string)
     ast_config(f=src_field_config, d=dst_field_config)