There are @objc declarations missing for delegate property and for protocol declaration in the library, and therefore Objective-C doesn't see this property at all and can't be used within Obj-C project. Please include this fix in your next release (add @objc before the delegate property and before protocol). Would be a good idea to create sample project in Objective-C just to be sure everything written is Swift is accessible from objective-c. It might also be a good idea to make all those delegate methods optional, so developers can decide which one is needed, and not include all 4 just to use a single one in the project.
There are @objc declarations missing for delegate property and for protocol declaration in the library, and therefore Objective-C doesn't see this property at all and can't be used within Obj-C project. Please include this fix in your next release (add @objc before the delegate property and before protocol). Would be a good idea to create sample project in Objective-C just to be sure everything written is Swift is accessible from objective-c. It might also be a good idea to make all those delegate methods optional, so developers can decide which one is needed, and not include all 4 just to use a single one in the project.