Add Performance.now() polyfill
Add Performance.now() polyfill

More or less untested.

nivertech/duktape,reqshark/duktape,nivertech/duktape,haosu1987/duktape,kphillisjr/duktape,jmptrader/duktape,chenyaqiuqiu/duktape,tassmjau/duktape,sloth4413/duktape,reqshark/duktape,pombredanne/duktape,nivertech/duktape,tassmjau/duktape,jmptrader/duktape,rwaldron/duktape,jmptrader/duktape,skomski/duktape,tassmjau/duktape,kphillisjr/duktape,eddieh/duktape,harold-b/duktape,skomski/duktape,tassmjau/duktape,tassmjau/duktape,sloth4413/duktape,pombredanne/duktape,pombredanne/duktape,markand/duktape,rwaldron/duktape,chenyaqiuqiu/duktape,jmptrader/duktape,thurday/duktape,zeropool/duktape,markand/duktape,reqshark/duktape,kphillisjr/duktape,thurday/duktape,eddieh/duktape,reqshark/duktape,eddieh/duktape,eddieh/duktape,pombredanne/duktape,pombredanne/duktape,jmptrader/duktape,nivertech/duktape,markand/duktape,chenyaqiuqiu/duktape,pombredanne/duktape,reqshark/duktape,sloth4413/duktape,kphillisjr/duktape,pombredanne/duktape,kphillisjr/duktape,skomski/duktape,reqshark/duktape,eddieh/duktape,haosu1987/duktape,haosu1987/duktape,eddieh/duktape,jmptrader/duktape,daimajia/duktape,nivertech/duktape,markand/duktape,markand/duktape,harold-b/duktape,chenyaqiuqiu/duktape,haosu1987/duktape,chenyaqiuqiu/duktape,zeropool/duktape,kphillisjr/duktape,chenyaqiuqiu/duktape,harold-b/duktape,thurday/duktape,nivertech/duktape,skomski/duktape,daimajia/duktape,haosu1987/duktape,haosu1987/duktape,thurday/duktape,markand/duktape,zeropool/duktape,skomski/duktape,markand/duktape,zeropool/duktape,thurday/duktape,nivertech/duktape,nivertech/duktape,daimajia/duktape,haosu1987/duktape,reqshark/duktape,markand/duktape,sloth4413/duktape,thurday/duktape,pombredanne/duktape,thurday/duktape,sloth4413/duktape,zeropool/duktape,svaarala/duktape,tassmjau/duktape,zeropool/duktape,daimajia/duktape,eddieh/duktape,sloth4413/duktape,zeropool/duktape,zeropool/duktape,sloth4413/duktape,pombredanne/duktape,reqshark/duktape,svaarala/duktape,rwaldron/duktape,harold-b/duktape,chenyaqiuqiu/duktape,markand/duktape,jmptrader/duktape,reqshark/duktape,haosu1987/duktape,daimajia/duktape,harold-b/duktape,chenyaqiuqiu/duktape,skomski/duktape,sloth4413/duktape,eddieh/duktape,kphillisjr/duktape,svaarala/duktape,thurday/duktape,harold-b/duktape,thurday/duktape,daimajia/duktape,rwaldron/duktape,harold-b/duktape,harold-b/duktape,harold-b/duktape,eddieh/duktape,skomski/duktape,svaarala/duktape,nivertech/duktape,markand/duktape,jmptrader/duktape,haosu1987/duktape,skomski/duktape,kphillisjr/duktape,skomski/duktape,harold-b/duktape,tassmjau/duktape,chenyaqiuqiu/duktape,nivertech/duktape,svaarala/duktape,haosu1987/duktape,zeropool/duktape,svaarala/duktape,tassmjau/duktape,eddieh/duktape,tassmjau/duktape,rwaldron/duktape,sloth4413/duktape,kphillisjr/duktape,tassmjau/duktape,rwaldron/duktape,kphillisjr/duktape,jmptrader/duktape,thurday/duktape,skomski/duktape,reqshark/duktape,svaarala/duktape,zeropool/duktape,jmptrader/duktape,svaarala/duktape,svaarala/duktape,chenyaqiuqiu/duktape,sloth4413/duktape,pombredanne/duktape