operator == method
Check if two matrices are the same.
Implementation
@override
bool operator ==(Object other) =>
(other is Matrix2) &&
(_m2storage[0] == other._m2storage[0]) &&
(_m2storage[1] == other._m2storage[1]) &&
(_m2storage[2] == other._m2storage[2]) &&
(_m2storage[3] == other._m2storage[3]);