Pauli matrices, rotation, etc.

* The ``bit labels'' is a string in the style of ``1-6'' (qubit 1 to qubit 6) and/or ``1 3 5'' (qubit 1, 3, and 5).

1. Pauli matrices
   1. NOT (bit labels);
   2. X (bit labels);
   3. Y (bit labels);
   4. Z (bit labels);
2. Hadamard gate
   1. H (bit labels);
3. Rotation Here, ``angle'' is the angle in radian (e.g. 0.78539816). To specify it in degree, add ``deg'' to the decimal numbers (e.g. 45deg).
   1. Rx (bit labels, angle);
   2. Ry (bit labels, angle);
   3. Rz (bit labels, angle);