Merge branch 'develop' into corestore4_develop

# Conflicts:
#	CoreStore.podspec
#	Sources/CoreStoreImportableAttributeType.swift
#	Sources/CoreStoreQueryableAttributeType.swift
#	Sources/Info.plist
#	Sources/NSManagedObjectModel+Setup.swift

Sources/NSManagedObjectContext+CoreStore.swift

@@ -0,0 +1,118 @@
+//
+//  NSManagedObjectContext+CoreStore.swift
+//  CoreStore
+//
+//  Copyright © 2014 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - NSManagedObjectContext
+
+internal extension NSManagedObjectContext {
+    
+    // MARK: Internal
+    
+    @nonobjc
+    internal var shouldCascadeSavesToParent: Bool {
+        
+        get {
+            
+            let number: NSNumber? = cs_getAssociatedObjectForKey(
+                &PropertyKeys.shouldCascadeSavesToParent,
+                inObject: self
+            )
+            return number?.boolValue ?? false
+        }
+        set {
+            
+            cs_setAssociatedCopiedObject(
+                NSNumber(value: newValue),
+                forKey: &PropertyKeys.shouldCascadeSavesToParent,
+                inObject: self
+            )
+        }
+    }
+    
+    @nonobjc
+    internal func setupForCoreStoreWithContextName(_ contextName: String) {
+        
+        self.name = contextName
+        self.observerForWillSaveNotification = NotificationObserver(
+            notificationName: NSNotification.Name.NSManagedObjectContextWillSave,
+            object: self,
+            closure: { (note) -> Void in
+                
+                let context = note.object as! NSManagedObjectContext
+                let insertedObjects = context.insertedObjects
+                let numberOfInsertedObjects = insertedObjects.count
+                guard numberOfInsertedObjects > 0 else {
+                    
+                    return
+                }
+                
+                do {
+                    
+                    try context.obtainPermanentIDs(for: Array(insertedObjects))
+                }
+                catch {
+                    
+                    CoreStore.log(
+                        CoreStoreError(error),
+                        "Failed to obtain permanent ID(s) for \(numberOfInsertedObjects) inserted object(s)."
+                    )
+                }
+            }
+        )
+    }
+    
+    
+    // MARK: Private
+    
+    private struct PropertyKeys {
+        
+        static var observerForWillSaveNotification: Void?
+        static var shouldCascadeSavesToParent: Void?
+    }
+    
+    @nonobjc
+    private var observerForWillSaveNotification: NotificationObserver? {
+        
+        get {
+            
+            return cs_getAssociatedObjectForKey(
+                &PropertyKeys.observerForWillSaveNotification,
+                inObject: self
+            )
+        }
+        set {
+            
+            cs_setAssociatedRetainedObject(
+                newValue,
+                forKey: &PropertyKeys.observerForWillSaveNotification,
+                inObject: self
+            )
+        }
+    }
+}
+