Bump version to 4.4.3.
Bump version to 4.4.3.

crimsonknave/lita,liamdawson/lita,MatthewKrey/lita,elia/lita,liamdawson/lita,sadiqmmm/lita,jimmycuadra/lita,mcgain/lita,byroot/lita,jaisonerick/lita,brodock/lita,jaisonerick/lita,brodock/lita,tristaneuan/lita,litaio/lita,mcgain/lita,MatthewKrey/lita,crimsonknave/lita,jimmycuadra/lita,tristaneuan/lita,litaio/lita,elia/lita,sadiqmmm/lita,byroot/lita