Made all DataSources as open class

Author: dangthaison91

Sources/DataSources/ASCollectionNode+Rx/RxASCollectionAnimatedDataSource.swift

@@ -12,7 +12,7 @@ import RxSwift
 import RxCocoa
 import Differentiator
 
-final class RxASCollectionAnimatedDataSource<S: AnimatableSectionModelType>: ASCollectionSectionedDataSource<S>, RxASCollectionDataSourceType {
+open class RxASCollectionAnimatedDataSource<S: AnimatableSectionModelType>: ASCollectionSectionedDataSource<S>, RxASCollectionDataSourceType {
 
     public typealias Element = [S]
     public typealias AnimationType = (ASCollectionSectionedDataSource<S>, ASCollectionNode, [Changeset<S>]) -> AnimationTransition

Sources/DataSources/ASCollectionNode+Rx/RxASCollectionReloadDataSource.swift

@@ -14,7 +14,7 @@ import AsyncDisplayKit
     import Differentiator
 #endif
 
-final class RxASCollectionReloadDataSource<S: SectionModelType>: ASCollectionSectionedDataSource<S>, RxASCollectionDataSourceType {
+open class RxASCollectionReloadDataSource<S: SectionModelType>: ASCollectionSectionedDataSource<S>, RxASCollectionDataSourceType {
     public typealias Element = [S]
 
     open func collectionNode(_ collectionNode: ASCollectionNode, observedEvent: RxSwift.Event<Element>) -> Void {

Sources/DataSources/ASTableNode+Rx/RxASTableAnimatedDataSource.swift

@@ -12,7 +12,7 @@ import RxSwift
 import RxCocoa
 import Differentiator
 
-final class RxASTableAnimatedDataSource<S: AnimatableSectionModelType>: ASTableSectionedDataSource<S>, RxASTableDataSourceType {
+open class RxASTableAnimatedDataSource<S: AnimatableSectionModelType>: ASTableSectionedDataSource<S>, RxASTableDataSourceType {
 
     public typealias Element = [S]
     public typealias AnimationType = (ASTableSectionedDataSource<S>, ASTableNode, [Changeset<S>]) -> AnimationTransition

Sources/DataSources/ASTableNode+Rx/RxASTableReloadDataSource.swift

@@ -17,7 +17,7 @@ import AsyncDisplayKit
     import Differentiator
 #endif
 
-final class RxASTableReloadDataSource<S: SectionModelType>: ASTableSectionedDataSource<S>, RxASTableDataSourceType {
+open class RxASTableReloadDataSource<S: SectionModelType>: ASTableSectionedDataSource<S>, RxASTableDataSourceType {
     public typealias Element = [S]
 
     open func tableNode(_ tableNode: ASTableNode, observedEvent: RxSwift.Event<Element>) -> Void {