[CHANGELOG] update for 0.12.2
[CHANGELOG] update for 0.12.2

pztrick/nw.js,jaruba/nw.js,happy-barrage/nw.js,happy-barrage/nw.js,M4sse/nw.js,happy-barrage/nw.js,jaruba/nw.js,parlaylabs/nw.js,ondra-novak/nw.js,ondra-novak/nw.js,happy-barrage/nw.js,happy-barrage/nw.js,Wombatpm/node-webkit,M4sse/nw.js,M4sse/nw.js,initialjk/node-webkit,pztrick/nw.js,M4sse/nw.js,jaruba/nw.js,pztrick/nw.js,initialjk/node-webkit,jaruba/nw.js,Wombatpm/node-webkit,pztrick/nw.js,M4sse/nw.js,Wombatpm/node-webkit,Wombatpm/node-webkit,initialjk/node-webkit,ondra-novak/nw.js,parlaylabs/nw.js,parlaylabs/nw.js,parlaylabs/nw.js,ondra-novak/nw.js,jaruba/nw.js,ondra-novak/nw.js,Wombatpm/node-webkit,initialjk/node-webkit,parlaylabs/nw.js,M4sse/nw.js,pztrick/nw.js,initialjk/node-webkit,parlaylabs/nw.js,parlaylabs/nw.js,initialjk/node-webkit,ondra-novak/nw.js,M4sse/nw.js,happy-barrage/nw.js,jaruba/nw.js,happy-barrage/nw.js,pztrick/nw.js,pztrick/nw.js,initialjk/node-webkit,jaruba/nw.js,ondra-novak/nw.js,Wombatpm/node-webkit,Wombatpm/node-webkit