Bump version to 4.6.0.
Bump version to 4.6.0.

tristaneuan/lita,jimmycuadra/lita,jimmycuadra/lita,crimsonknave/lita,litaio/lita,crimsonknave/lita,brodock/lita,brodock/lita,tristaneuan/lita,liamdawson/lita,MatthewKrey/lita,litaio/lita,MatthewKrey/lita,liamdawson/lita