Added manage order in sections.

Author: ivanvorobei

Example Apps/SPDiffable.xcodeproj/project.xcworkspace/xcuserdata/ivanvorobei.xcuserdatad/UserInterfaceState.xcuserstate

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
   s.name = 'SPDiffable'
-  s.version = '1.3.3'
+  s.version = '1.3.4'
   s.summary = 'Extenshion of Diffable API which allow not duplicate code and use less models.'
   s.homepage = 'https://github.com/ivanvorobei/SPDiffable'
   s.source = { :git => 'https://github.com/ivanvorobei/SPDiffable.git', :tag => s.version }

SPDiffable.podspec

@@ -85,6 +85,7 @@ open class SPDiffableCollectionDataSource: UICollectionViewDiffableDataSource<SP
             // Remove section if it deleted from content.
 
             var snapshot = self.snapshot()
+            
             let deletedSections = snapshot.sectionIdentifiers.filter({ (checkSection) -> Bool in
                 return !sections.contains(where: { $0.identifier == checkSection.identifier })
             })
@@ -93,6 +94,19 @@ open class SPDiffableCollectionDataSource: UICollectionViewDiffableDataSource<SP
                 apply(snapshot, animated: true)
             }
 
+            // Reoder
+
+            for (sectionIndex, section) in sections.enumerated() {
+                let beforeSectionIndex = sectionIndex - 1
+                guard (sections.count > beforeSectionIndex) && (beforeSectionIndex >= 0) else { continue }
+                let afterSection = sections[beforeSectionIndex]
+                snapshot.moveSection(section, afterSection: afterSection)
+            }
+            
+            // Apply Sections Changes
+            
+            apply(snapshot, animated: true)
+            
             // Update current sections.
 
             for section in sections {