Add: configureLayout method to InitializeableView protocol and all implementations.

Update: GeneralDataLoadingViewModel now can handle state changes and result of data source. Previously it was possible only in view controller.
Add: GeneralDataLoadingHandler protocol, that defines methods for common data loading states handling.
Add: resultObservable and resultDriver properties to GeneralDataLoadingViewModel.
Add: hidesWhenStopped option to SpinnerView, so you can stop animation without hiding image inside it.
Update: Migrate to Swift 4.2 & Xcode 10. Update dependencies.

Sources/Extensions/DataLoading/GeneralDataLoading/GeneralDataLoadingViewModel+Extensions.swift

@@ -20,18 +20,40 @@
 //  THE SOFTWARE.
 //
 
+import RxSwift
+import RxCocoa
+
 public extension GeneralDataLoadingViewModel {
 
+    /// Manually update state to result with given value.
+    ///
+    /// - Parameter newResult: New value to use as result.
     func updateResultManually(to newResult: ResultType) {
         updateStateManually(to: .result(newResult: newResult, from: .just(newResult)))
     }
 
-}
+    /// Emit elements of ResultType from state observable.
+    var resultObservable: Observable<ResultType> {
+        return loadingStateObservable.flatMap { state -> Observable<ResultType> in
+            switch state {
+            case .result(let newResult, _):
+                return .just(newResult)
+            default:
+                return .empty()
+            }
+        }
+    }
 
-public extension GeneralDataLoadingViewModel where ResultType: Collection {
-
-    convenience init(dataSource: DataSourceType) {
-        self.init(dataSource: dataSource) { $0.isEmpty }
+    /// Emit elements of ResultType from state driver.
+    var resultDriver: Driver<ResultType> {
+        return loadingStateDriver.flatMap { state -> Driver<ResultType> in
+            switch state {
+            case .result(let newResult, _):
+                return .just(newResult)
+            default:
+                return .empty()
+            }
+        }
     }
 
 }