Floridians with concealed-weapons licenses would be able to carry firearms into areas now deemed “gun-free” under an array of measures that will be championed by Republican lawmakers during the first legislative session since mass killings at an Orlando nightclub and a Fort Lauderdale airport. Proposals have been introduced to allow the more than 1.7 million people with concealed-carry licenses to bring guns to places such as college and university campuses, airport terminals and government meetings.