The US Department of Justice has settled with publisher Macmillan in a long-running e-book price-fixing lawsuit, says AllThingsD. "Under the proposed settlement agreement, Macmillan will immediately lift restrictions it has imposed on discounting and other promotions by e-book retailers and will be prohibited until December 2014 from entering into new agreements with similar restrictions," a DoJ statement reads. "The proposed settlement agreement also will impose a strong antitrust compliance program on Macmillan, including requirements that it provide advance notification to the department