Oil prices edged higher on Friday, a day after OPEC and other major producers agreed to extend output curbs until the end of 2018 in a bid to tackle global oversupply and bolster prices. The Organization of the Petroleum Exporting Countries and some non-OPEC producers led by Russia agreed on Thursday to keep current limits on output in place until the end of next year, although they signaled a possible early exit from the deal should the market overheat and prices rise too far. Sponsored Brent was trading at $63.07 by 0931 GMT, up 44 cents on the day. U.S. light crude was 34 cents up at $57.74. OPEC’s decision to extend output curbs had largely been priced in by the market, analysts said. Traders had pushed up […]