Release 1.4.1

Release 1.4.0

Removing 1.3.0.dev -> 1.3.0

Removing 1.2.0.dev -> 1.2.0

Merge branch 'v1.1.0-dev' of https://github.com/quantumlib/cirq into …

…v1.1.0-dev

Removing v0.16.0dev -> v1.0.0

Roll back the default on unitary to np.complex64, change default for …

…final_state_vector (#5636)

Rolls back change in #5426 that set the default precision on `Circuit#unitary` to `np.complex128`.

Also sets the default on `Circuit#final_state_vector` to `np.complex128`.  There was a deprecation warning that this was going to be downgraded to `np.complex64`,, but this will now remain `np.complex128`.  This is breaking in that is someone explicitly passed `dtype=None` to this method it would now break.  

Rolls back #5426 #5616 #5537 #5535

Bumping to v0.14.1.

Removing 0.14.0.dev -> 0.14.0

remove unrelated files.