Allow lower deploy target for dependency managers

Kingfisher.podspec

@@ -49,10 +49,10 @@ Pod::Spec.new do |s|
     sp.source_files = ["Sources/SwiftUI/**"]
     sp.exclude_files = ["Sources/SwiftUI/Delegate.swift"]
     sp.dependency "Kingfisher/Core"
-    sp.ios.deployment_target = "13.0"
-    sp.tvos.deployment_target = "13.0"
-    sp.osx.deployment_target = "10.15"
-    sp.watchos.deployment_target = "6.0"
+    sp.ios.deployment_target = "10.0"
+    sp.tvos.deployment_target = "10.0"
+    sp.osx.deployment_target = "10.12"
+    sp.watchos.deployment_target = "3.0"
     sp.pod_target_xcconfig = { 'OTHER_SWIFT_FLAGS' => '-DKingfisherCocoaPods' }
   end
 

Kingfisher.xcodeproj/project.pbxproj

@@ -1228,7 +1228,7 @@
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
 				INFOPLIST_FILE = Sources/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
 				LD_DYLIB_INSTALL_NAME = "$(DYLIB_INSTALL_NAME_BASE:standardizepath)/$(EXECUTABLE_PATH)";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
@@ -1283,7 +1283,7 @@
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
 				INFOPLIST_FILE = Sources/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
 				LD_DYLIB_INSTALL_NAME = "$(DYLIB_INSTALL_NAME_BASE:standardizepath)/$(EXECUTABLE_PATH)";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.15;