修复iOS8不允许访问相册，进入照片选择的崩溃问题

TZImagePickerController/TZImagePickerController/TZImageManager.m

@@ -27,7 +27,7 @@ static CGFloat TZScreenScale;
     dispatch_once(&onceToken, ^{
         manager = [[self alloc] init];
         manager.cachingImageManager = [[PHCachingImageManager alloc] init];
-        manager.cachingImageManager.allowsCachingHighQualityImages = NO;
+        manager.cachingImageManager.allowsCachingHighQualityImages = YES;
         
         TZScreenWidth = [UIScreen mainScreen].bounds.size.width;
         // 测试发现，如果scale在plus真机上取到3.0，内存会增大特别多。故这里写死成2.0

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -339,7 +339,6 @@ static CGSize AssetGridThumbnailSize;
                     [tzImagePickerVc.selectedModels removeObject:model_item];
                     break;
                 }
-                //break;// loop只运行了一次， 导致数组大于1时，不能正确删除，并引发一系列BUG
             }
             [weakSelf refreshBottomToolBarStatus];
         } else {