Pedantic use of elementwise operators.

See super long discussions in various Julia issues... grudgingly accept this.
Bugfix for expand() with empty eyeIndices.

Not sure what base julia behavior changed that broke this, but this is clearer
anyway...

--BRJ and CAR
Update package name in license file
Pedantic about broadcasting addition.
Add startIdx variable to strip initial padding from sequences.
Add a paulis module

Gives pauli_mats, pauli_strs and pauli_decomp.
Merge branch 'master' of github.com:BBN-Q/QSimulator.jl
Botched including it in the module. X is as a quantum system operator.
Some clever ideas from @blakejohnson

Type stability in the pauli_mats map and a map-do syntax for base_paulis.
Paulis re-org.
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/paulis.jl
Resolved conflicts
Fixing broadcasting
Updated @test_throws