Set lastPreviewAnalysis times to all be based on UtcNow to fix #98
Set lastPreviewAnalysis times to all be based on UtcNow to fix #98

Redth/ZXing.Net.Mobile,benyao1201/Xamarin,sephirothwzc/ZXing.Net.Mobile,r2d2rigo/ZXing.Net.Mobile,syphe/ZXing.Net.Mobile,nied/ZXing.Net.Mobile