iOS答题，小说，漫画翻页效果

配置多种翻页效果
///翻页效果枚举
typedef NS_ENUM(NSInteger, LABPageEffectType) {
    LABPageEffectTypeNone,              //无效果
    LABPageEffectTypeCoverPage,         //覆盖
    LABPageEffectTypeLeftRightPage,     //左右分页
    LABPageEffectTypeLeftRightScroll,   //左右滑动
    LABPageEffectTypeSimulation,        //仿真
    LABPageEffectTypeUpdownPage,        //上下分页
    LABPageEffectTypeUpdownScroll       //上下滑动
};

配置设置参数

///dataSource/delegate
@property (nonatomic, weak) id<LABCoverControllerDataSource> dataSource;
@property (nonatomic, weak) id<LABCoverControllerDelegate> delegate;
///页面切换代理
@property (nonatomic, strong) id<LABCoverTranslationDelegate> translationDelegate;
///切换方向,默认LABCoverDirectionHorizontal
@property (nonatomic, assign) LABCoverDirection direction;

///当前控制器
@property(nonatomic, strong, readonly) UIViewController *curController;

///是否可以点击切换,默认YES
@property (nonatomic, assign) BOOL tapSwitchEnable;
///是否可以滑动切换,默认YES
@property (nonatomic, assign) BOOL panSwitchEnable;
///切换时是否动画,默认YES
@property (nonatomic, assign) BOOL switchAnimationEnable;
///是否正在动画中
@property(nonatomic, assign, readonly, getter=isAnimating) BOOL animating;

获取将要展示页面

///获取上一页的VC
///@param coverController coverController
///@param viewController 当前VC
///@return 上一页的VC
- (nullable UIViewController *)labCoverController:(LABCoverController *)coverController viewControllerBeforeViewController:(UIViewController *)viewController;

///获取下一页的VC
///@param coverController coverController
///@param viewController 当前VC
///@return 下一页的VC
- (nullable UIViewController *)labCoverController:(LABCoverController *)coverController viewControllerAfterViewController:(UIViewController *)viewController;