Fix deployment target

Author: ivanvorobei

Example/Aliases.swift

@@ -20,6 +20,7 @@ typealias DiffableCollectionCellProviders = SPDiffableCollectionCellProviders
 typealias DiffableItem = SPDiffableItem
 typealias DiffableWrapperItem = SPDiffableWrapperItem
 typealias DiffableSection = SPDiffableSection
+typealias DiffableSnapshot = SPDiffableSnapshot
 
 // MARK:  Table models
 

Package.swift

@@ -6,7 +6,7 @@ import PackageDescription
 let package = Package(
     name: "SPDiffable",
     platforms: [
-        .iOS(.v13)
+        .iOS(.v12)
     ],
     products: [
         // Products define the executables and libraries produced by a package, and make them visible to other packages.

Sources/SPDiffable/DataSource/SPDiffableCollectionDataSource.swift

@@ -52,6 +52,7 @@ open class SPDiffableCollectionDataSource: UICollectionViewDiffableDataSource<SP
      - parameter sections: Array of `SPDiffableSection`, it content of table.
      - parameter animating: Shoud apply changes with animation or not.
      */
+    #warning("trouble with reuse, need fix")
     public func apply(sections: [SPDiffableSection], animating: Bool) {
         var snapshot = SPDiffableSnapshot()
         snapshot.appendSections(sections)