Revert "Drop iOS 14 and macOS 11 support"

This reverts commit dcef7f47ff.

Shared/Subscriptions/ChannelsView.swift

@@ -34,9 +34,8 @@ struct ChannelsView: View {
                         Text(channel.name)
                             .lineLimit(1)
                     }
-                    #if !os(tvOS)
+                    .backport
                     .badge(showUnwatchedFeedBadges ? feedCount.unwatchedByChannelText(channel) : nil)
-                    #endif
 
                     Group {
                         #if os(tvOS)
@@ -74,9 +73,8 @@ struct ChannelsView: View {
 
                 Color.clear.padding(.bottom, 50)
                     .listRowBackground(Color.clear)
-                #if os(iOS)
-                    .listRowSeparator(.hidden)
-                #endif
+                    .backport
+                    .listRowSeparator(false)
             }
         }
         #if !os(tvOS)
@@ -91,6 +89,12 @@ struct ChannelsView: View {
             subscriptions.load(force: true)
         }
         #if os(iOS)
+        .refreshControl { refreshControl in
+            subscriptions.load(force: true) {
+                refreshControl.endRefreshing()
+            }
+        }
+        .backport
         .refreshable {
             subscriptions.load(force: true)
         }

Shared/Subscriptions/FeedView.swift

@@ -22,6 +22,12 @@ struct FeedView: View {
                 feed.loadResources()
             }
         #if os(iOS)
+            .refreshControl { refreshControl in
+                feed.loadResources(force: true) {
+                    refreshControl.endRefreshing()
+                }
+            }
+            .backport
             .refreshable {
                 feed.loadResources(force: true)
             }