diff --git a/Pod/Classes/ArrayEx.swift b/Pod/Classes/ArrayEx.swift
index f437fb9..cf3e5be 100644
--- a/Pod/Classes/ArrayEx.swift
+++ b/Pod/Classes/ArrayEx.swift
@@ -9,9 +9,11 @@
 import Foundation
 
 extension Array {
+    
     func each(_ f: (Element) -> ()) {
         for item in self {
             f(item)
         }
     }
+    
 }
diff --git a/Pod/Classes/CGPointEx.swift b/Pod/Classes/CGPointEx.swift
index 2d61c63..eaee8ff 100644
--- a/Pod/Classes/CGPointEx.swift
+++ b/Pod/Classes/CGPointEx.swift
@@ -84,4 +84,5 @@ extension CGPoint {
         return nil
     }
     
+    
 }
diff --git a/Pod/Classes/CGRectEx.swift b/Pod/Classes/CGRectEx.swift
index 11cd8f3..1cad800 100644
--- a/Pod/Classes/CGRectEx.swift
+++ b/Pod/Classes/CGRectEx.swift
@@ -10,14 +10,17 @@ import Foundation
 import UIKit
 
 extension CGRect {
+    
     var rightBottom: CGPoint {
         get {
             return CGPoint(x: origin.x + width, y: origin.y + height)
         }
     }
+    
     var center: CGPoint {
         get {
             return origin.plus(rightBottom).mul(0.5)
         }
     }
+    
 }
diff --git a/Pod/Classes/LiquidFloatingActionButton.swift b/Pod/Classes/LiquidFloatingActionButton.swift
index 7923b10..ec64403 100644
--- a/Pod/Classes/LiquidFloatingActionButton.swift
+++ b/Pod/Classes/LiquidFloatingActionButton.swift
@@ -43,8 +43,8 @@ open class LiquidFloatingActionButton : UIView {
         }
     }
     
-    open var delegate:   LiquidFloatingActionButtonDelegate?
-    open var dataSource: LiquidFloatingActionButtonDataSource?
+    weak open var delegate:   LiquidFloatingActionButtonDelegate?
+    weak open var dataSource: LiquidFloatingActionButtonDataSource?
 
     open var responsible = true
     open var isOpening: Bool  {
diff --git a/Pod/Classes/LiquidUtil.swift b/Pod/Classes/LiquidUtil.swift
index 1c936e4..a7526c1 100644
--- a/Pod/Classes/LiquidUtil.swift
+++ b/Pod/Classes/LiquidUtil.swift
@@ -17,6 +17,7 @@ func withBezier(_ f: (UIBezierPath) -> ()) -> UIBezierPath {
 }
 
 extension CALayer {
+    
     func appendShadow() {
         shadowColor = UIColor.black.cgColor
         shadowRadius = 2.0
@@ -29,9 +30,11 @@ extension CALayer {
         shadowRadius = 0.0
         shadowColor = UIColor.clear.cgColor
     }
+    
 }
 
 class CGMath {
+    
     static func radToDeg(_ rad: CGFloat) -> CGFloat {
         return rad * 180 / CGFloat(M_PI)
     }
diff --git a/Pod/Classes/LiquittableCircle.swift b/Pod/Classes/LiquittableCircle.swift
index bb2865f..c262134 100644
--- a/Pod/Classes/LiquittableCircle.swift
+++ b/Pod/Classes/LiquittableCircle.swift
@@ -78,5 +78,6 @@ open class LiquittableCircle : UIView {
     open override func draw(_ rect: CGRect) {
         drawCircle()
     }
+    
 
 }
diff --git a/Pod/Classes/SimpleCircleLiquidEngine.swift b/Pod/Classes/SimpleCircleLiquidEngine.swift
index 1ec13b1..a24bff6 100644
--- a/Pod/Classes/SimpleCircleLiquidEngine.swift
+++ b/Pod/Classes/SimpleCircleLiquidEngine.swift
@@ -148,4 +148,5 @@ class SimpleCircleLiquidEngine {
         return distance - circle.radius - other.radius < radiusThresh
     }
 
+    
 }
diff --git a/Pod/Classes/UIColorEx.swift b/Pod/Classes/UIColorEx.swift
index 9fce8dd..e45a305 100644
--- a/Pod/Classes/UIColorEx.swift
+++ b/Pod/Classes/UIColorEx.swift
@@ -50,4 +50,5 @@ extension UIColor {
             alpha: 1.0
         )
     }
+    
 }