Upgrade version of RxSwift, RxCocoa, Alamofire.

Pods/RxSwift/RxSwift/SwiftSupport/SwiftSupport.swift

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+//
+//  SwiftSupport.swift
+//  RxSwift
+//
+//  Created by Volodymyr  Gorbenko on 3/6/17.
+//  Copyright © 2017 Krunoslav Zaher. All rights reserved.
+//
+
+import Foundation
+
+#if swift(>=4.0)
+    typealias IntMax = Int64
+    public typealias RxAbstractInteger = FixedWidthInteger
+    
+    extension SignedInteger {
+        func toIntMax() -> IntMax {
+            return IntMax(self)
+        }
+    }
+#else
+    public typealias RxAbstractInteger = SignedInteger
+  
+    extension Array {
+        public mutating func swapAt(_ i: Int, _ j: Int) {
+            swap(&self[i], &self[j])
+        }
+    }
+  
+#endif