Warnings in Xcode 9

[yzhong52]

There are a number of warnings in Xcode 9. Any plan of release an update for this library to address those?

Examples:

@property (nonatomic, copy) void(^willShowCallback)();    // Warnign: This block declaration is not a prototype
@property (nonatomic, copy) void(^didShowCallback)();     // Warnign: This block declaration is not a prototype
@property (nonatomic, copy) void(^willHideCallback)();    // Warnign: This block declaration is not a prototype
@property (nonatomic, copy) void(^didHideCallback)();     // Warnign: This block declaration is not a prototype

And it looks like they can be easily fixed as https://stackoverflow.com/q/44473146/1035008