quaternions do not respect numpy.set_printoptions

[tapple]

quaternions print their components in a fixed format. by contrast, number printing in numpy is quite configurable via numpy.set_printoptions. quaternions should print their components the same format numpy prints other floating point numbers

To Reproduce

In [1]: import numpy as np, quaternion

In [2]: q = quaternion.from_rotation_vector([1, 2, 3])

In [3]: q
Out[3]: quaternion(-0.295551127492978, 0.255321860045264, 0.510643720090529, 0.765965580135793)

In [4]: quaternion.as_float_array(q)
Out[4]: array([-0.29555113,  0.25532186,  0.51064372,  0.76596558])

In [5]: np.set_printoptions(precision=5, suppress=True, sign='+', floatmode='fixed')

In [6]: quaternion.as_float_array(q)
Out[6]: array([-0.29555, +0.25532, +0.51064, +0.76597])

In [7]: q
Out[7]: quaternion(-0.295551127492978, 0.255321860045264, 0.510643720090529, 0.765965580135793)

Expected behavior

Out[3]: quaternion(-0.29555113,  0.25532186,  0.51064372,  0.76596558)
Out[7]: quaternion(-0.29555, +0.25532, +0.51064, +0.76597)

Environment (please complete the following information):

• OS: Fedora 42
• Installation method: pip
• Numpy version: 2.3.2
• Quaternion version: 2024.0.10

[maroba]

I just created a pull request that should resolve this issue.