Minsoo Kim

Prebuild failed for mac and xcode beta

10

``` CocoaPods : 1.7.5 Xcode : 11.0 (11M392r) cocoapods-binary : 0.4.4 plugin 'cocoapods-binary' ``` This might be issue with Catalina Beta with XCode 11 beta, when Alamofire is added, pod...

added feature that clearing current selection if max selectable is 1

2

if max selectable is 1, user would want to change the selection by just clicking other image.

Added limited case for iOS 14 related to #56