Binary operations can move values outside of valid bounds

[mhostetter]

import numpy as np

import galois

x = galois.GF2([1, 0, 1])
print(x)

x = np.left_shift(x, 1)
print(x)

$ python3 test_left_shift.py 
[1 0 1]
[2 0 2]  # Should error

[mhostetter]

import numpy as np

import galois

x = galois.GF2([1, 0, 1])
print(x)

x = np.bitwise_or(x, 0b10)
print(x)

$ python3 test_bitwise_or.py
[1 0 1]
[3 2 3]  # Should error

[mhostetter]

Maybe use _view() instead of _view_without_verification() for operations that could expand the bit depth.