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