HalfInt usage broken

[Lala5th]

The examples as well as code containing half-integer moments fail. This can be reproduced with a fresh install. An example trace is pasted below. I tracked this to a change in sympy and could circumvent by reverting the sympy version to 1.12. One solution might be to use Rational from sympy for the half integers moving forward.

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Cell In[3], line 10
      7 mol.Nmax = 2
      9 # Generate Hamiltonians
---> 10 H0 = diatomic.operators.hyperfine_ham(mol)
     11 Hz = diatomic.operators.zeeman_ham(mol)
     13 # Parameter Space

File ~\.conda\envs\py310\lib\site-packages\diatomic\__init__.py:35, in log_time.<locals>.log_time_wrapper(*args, **kwargs)
     33 logger.info(f"Starting Function {func.__name__}...")
     34 start_time = time.perf_counter()
---> 35 result = func(*args, **kwargs)
     36 end_time = time.perf_counter()
     37 total_time = end_time - start_time

File ~\.conda\envs\py310\lib\site-packages\diatomic\operators.py:942, in hyperfine_ham(mol)
    936 scalar_part = (
    937     scalar_nuclear(mol.Ci[0], N, I1)
    938     + scalar_nuclear(mol.Ci[1], N, I2)
    939     + scalar_nuclear(mol.C4, I1, I2)
    940 )
    941 tensor_nuclear_part = tensor_nuclear(mol.C3, I1, I2, mol.Ii[0], mol.Ii[1], mol.Nmax)
--> 942 quadrupole_part = quadrupole(mol)
    943 H = rotational_part + scalar_part + tensor_nuclear_part + quadrupole_part
    944 return H

File ~\.conda\envs\py310\lib\site-packages\diatomic\operators.py:755, in quadrupole(mol)
    739 """Calculates the nuclear electric quadrupole interaction energy.
    740
    741 Computes the quadrupole interaction terms for the full hyperfine Hamiltonian using
   (...)
    751     np.ndarray: The quadrupole interaction term of the hyperfine Hamiltonian.
    752 """
    754 TdE = expanded_electric_gradient(mol)
--> 755 Tq0 = expanded_quad_moment(mol, 0)
    756 Tq1 = expanded_quad_moment(mol, 1)
    758 if mol.Ii[0] < 1:

File ~\.conda\envs\py310\lib\site-packages\diatomic\operators.py:715, in expanded_quad_moment(mol, nucleus)
    704 def expanded_quad_moment(mol, nucleus):
    705     """Expands the quadrupole moment tensor into the full hyperfine basis.
    706
    707     Args:
   (...)
    713         np.ndarray: The expanded nuclear quadrupole moment tensor.
    714     """
--> 715     T_nucleus = quad_moment(mol.Ii[nucleus])
    717     # Expand into full hyperfine basis
    718     num_N_proj = num_proj_with_below(mol.Nmax)

File ~\.conda\envs\py310\lib\site-packages\diatomic\operators.py:697, in quad_moment(I_nuc)
    693     for j, M2 in enumerate(proj_iter(I_nuc)):
    694         for n, q in enumerate(range(-2, 2 + 1)):
    695             T[n][i, j] = (
    696                 (-1) ** int(I_nuc - M1)
--> 697                 * wigner_3j(I_nuc, 2, I_nuc, -M1, q, M2)
    698                 / wigner_3j(I_nuc, 2, I_nuc, -I_nuc, 0, I_nuc)
    699             )
    701 return T

File ~\.conda\envs\py310\lib\site-packages\sympy\physics\wigner.py:219, in wigner_3j(j_1, j_2, j_3, m_1, m_2, m_3)
    130 def wigner_3j(j_1, j_2, j_3, m_1, m_2, m_3):
    131     r"""
    132     Calculate the Wigner 3j symbol `\operatorname{Wigner3j}(j_1,j_2,j_3,m_1,m_2,m_3)`.
    133
   (...)
    216     - Jens Rasch (2009-03-24): initial version
    217     """
--> 219     j_1, j_2, j_3, m_1, m_2, m_3 = map(_int_or_halfint,
    220                                        [j_1, j_2, j_3, m_1, m_2, m_3])
    222     if m_1 + m_2 + m_3 != 0:
    223         return S.Zero

File ~\.conda\envs\py310\lib\site-packages\sympy\physics\wigner.py:127, in _int_or_halfint(value)
    125 elif isinstance(value, Float):
    126     return _int_or_halfint(float(value))
--> 127 raise ValueError("expecting integer or half-integer, got %s" % value)

ValueError: expecting integer or half-integer, got (5/2)