Removed 'final' declaration in attempt to fix odd crashes

Source/Constraint.swift

@@ -63,7 +63,7 @@ public class Constraint {
 /**
     Used internally to implement a ConcreteConstraint
 */
-final internal class ConcreteConstraint: Constraint {
+internal class ConcreteConstraint: Constraint {
     
     internal override func updateOffset(amount: Float) -> Void {
         self.constant = amount

Source/ConstraintDescription.swift

@@ -163,7 +163,7 @@ public protocol ConstraintDescriptionExtendable: ConstraintDescriptionRelatable
 /**
     Used to internally manage building constraint
  */
-final internal class ConstraintDescription: ConstraintDescriptionExtendable, ConstraintDescriptionEditable, ConstraintDescriptionFinalizable {
+internal class ConstraintDescription: ConstraintDescriptionExtendable, ConstraintDescriptionEditable, ConstraintDescriptionFinalizable {
     
     internal var left: ConstraintDescriptionExtendable { return self.addConstraint(ConstraintAttributes.Left) }
     internal var top: ConstraintDescriptionExtendable { return self.addConstraint(ConstraintAttributes.Top) }

Source/ConstraintItem.swift

@@ -30,7 +30,7 @@ import AppKit
 /**
     Used to assist in building a constraint
 */
-final public class ConstraintItem {
+public class ConstraintItem {
     
     internal init(object: AnyObject?, attributes: ConstraintAttributes) {
         self.object = object

Source/ConstraintMaker.swift

@@ -30,7 +30,7 @@ import AppKit
 /**
     Used to make constraints
 */
-final public class ConstraintMaker {
+public class ConstraintMaker {
     
     /// left edge
     public var left: ConstraintDescriptionExtendable { return self.makeConstraintDescription(ConstraintAttributes.Left) }

Source/LayoutConstraint.swift

@@ -30,7 +30,7 @@ import AppKit
 /**
     Used to add extra information to the actual `NSLayoutConstraint`'s that will UIKit/AppKit will utilize
 */
-final public class LayoutConstraint: NSLayoutConstraint {
+public class LayoutConstraint: NSLayoutConstraint {
     
     internal var snp_constraint: Constraint? = nil
     

Source/View+SnapKit.swift

@@ -35,85 +35,85 @@ public typealias View = NSView
 public extension View {
     
     /// left edge
-    final public var snp_left: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Left) }
+    public var snp_left: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Left) }
     
     /// top edge
-    final public var snp_top: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Top) }
+    public var snp_top: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Top) }
     
     /// right edge
-    final public var snp_right: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Right) }
+    public var snp_right: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Right) }
     
     /// bottom edge
-    final public var snp_bottom: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Bottom) }
+    public var snp_bottom: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Bottom) }
     
     /// leading edge
-    final public var snp_leading: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Leading) }
+    public var snp_leading: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Leading) }
     
     /// trailing edge
-    final public var snp_trailing: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Trailing) }
+    public var snp_trailing: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Trailing) }
     
     /// width dimension
-    final public var snp_width: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Width) }
+    public var snp_width: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Width) }
     
     /// height dimension
-    final public var snp_height: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Height) }
+    public var snp_height: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Height) }
     
     /// centerX position
-    final public var snp_centerX: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterX) }
+    public var snp_centerX: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterX) }
     
     /// centerY position
-    final public var snp_centerY: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterY) }
+    public var snp_centerY: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterY) }
     
     /// baseline position
-    final public var snp_baseline: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Baseline) }
+    public var snp_baseline: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Baseline) }
     
     #if os(iOS)
     
     /// first baseline position
-    final public var snp_firstBaseline: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.FirstBaseline) }
+    public var snp_firstBaseline: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.FirstBaseline) }
     
     /// left margin
-    final public var snp_leftMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.LeftMargin) }
+    public var snp_leftMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.LeftMargin) }
     
     /// right margin
-    final public var snp_rightMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.RightMargin) }
+    public var snp_rightMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.RightMargin) }
     
     /// top margin
-    final public var snp_topMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.TopMargin) }
+    public var snp_topMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.TopMargin) }
     
     /// bottom margin
-    final public var snp_bottomMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.BottomMargin) }
+    public var snp_bottomMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.BottomMargin) }
     
     /// leading margin
-    final public var snp_leadingMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.LeadingMargin) }
+    public var snp_leadingMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.LeadingMargin) }
     
     /// trailing margin
-    final public var snp_trailingMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.TrailingMargin) }
+    public var snp_trailingMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.TrailingMargin) }
     
     /// centerX within margins
-    final public var snp_centerXWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterXWithinMargins) }
+    public var snp_centerXWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterXWithinMargins) }
     
     /// centerY within margins
-    final public var snp_centerYWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterYWithinMargins) }
+    public var snp_centerYWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterYWithinMargins) }
     
     #endif
     
     // top + left + bottom + right edges
-    final public var snp_edges: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Edges) }
+    public var snp_edges: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Edges) }
     
     // width + height dimensions
-    final public var snp_size: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Size) }
+    public var snp_size: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Size) }
     
     // centerX + centerY positions
-    final public var snp_center: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Center) }
+    public var snp_center: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Center) }
     
     #if os(iOS)
     
     // top + left + bottom + right margins
-    final public var snp_margins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Margins) }
+    public var snp_margins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Margins) }
     
     // centerX + centerY within margins
-    final public var snp_centerWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterWithinMargins) }
+    public var snp_centerWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterWithinMargins) }
     
     #endif
     
@@ -124,7 +124,7 @@ public extension View {
         
         :returns: the constraints made
     */
-    final public func snp_prepareConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> [Constraint] {
+    public func snp_prepareConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> [Constraint] {
         return ConstraintMaker.prepareConstraints(self, closure: closure)
     }
     
@@ -133,7 +133,7 @@ public extension View {
         
         :param: closure that will be passed the `ConstraintMaker` to make the constraints with
     */
-    final public func snp_makeConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> Void {
+    public func snp_makeConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> Void {
         ConstraintMaker.makeConstraints(self, closure: closure)
     }
     
@@ -144,7 +144,7 @@ public extension View {
     
         :param: closure that will be passed the `ConstraintMaker` to update the constraints with
     */
-    final public func snp_updateConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> Void {
+    public func snp_updateConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> Void {
         ConstraintMaker.updateConstraints(self, closure: closure)
     }
     
@@ -153,18 +153,18 @@ public extension View {
     
         :param: closure that will be passed the `ConstraintMaker` to remake the constraints with
     */
-    final public func snp_remakeConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> Void {
+    public func snp_remakeConstraints(@noescape closure: (make: ConstraintMaker) -> Void) -> Void {
         ConstraintMaker.remakeConstraints(self, closure: closure)
     }
     
     /**
         Removes all previously made constraints.
     */
-    final public func snp_removeConstraints() {
+    public func snp_removeConstraints() {
         ConstraintMaker.removeConstraints(self)
     }
     
-    final internal var snp_installedLayoutConstraints: [LayoutConstraint] {
+    internal var snp_installedLayoutConstraints: [LayoutConstraint] {
         get {
             if let constraints = objc_getAssociatedObject(self, &installedLayoutConstraintsKey) as? [LayoutConstraint] {
                 return constraints