Changes to support Swift 4.2

Author: poetmountain

Sources/CATempo.swift

@@ -47,7 +47,7 @@ public class CATempo : Tempo {
     public override init() {
         super.init()
         displayLink = CADisplayLink.init(target: self, selector: #selector(update))
-        displayLink?.add(to: RunLoop.main, forMode: RunLoopMode(rawValue: RunLoopMode.commonModes.rawValue))
+        displayLink?.add(to: RunLoop.main, forMode: RunLoop.Mode(rawValue: RunLoop.Mode.common.rawValue))
     }
 
     deinit {

Sources/MotionMachine.swift

@@ -553,9 +553,9 @@ func ≈≈ (a: Float, b: Float) -> Bool {
         return true
     }
 
-    let fabs_a = fabs(a)
-    let fabs_b = fabs(b)
-    let diff = fabs(fabs_a - fabs_b)
+    let fabs_a = abs(a)
+    let fabs_b = abs(b)
+    let diff = abs(fabs_a - fabs_b)
 
     if (a == 0.0 || b == 0.0 || diff < Float.leastNormalMagnitude) {
         // a or b is zero or both are extremely close to it