Bk/refactor model state batch updates (#145)

* Refactor modelState to not know about previous section modes

Also update min iOS version to iOS 12

* Update tests

Author: bryankeller

Example/MagazineLayoutExample.xcodeproj/project.pbxproj

@@ -342,6 +342,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = "App Icon & Top Shelf Image";
 				CODE_SIGN_STYLE = Automatic;
 				INFOPLIST_FILE = MagazineLayoutExampleAppleTV/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.6;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -350,7 +351,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				SWIFT_VERSION = 5.0;
-				TVOS_DEPLOYMENT_TARGET = 13.0;
+				TVOS_DEPLOYMENT_TARGET = 15.0;
 			};
 			name = Debug;
 		};
@@ -360,6 +361,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = "App Icon & Top Shelf Image";
 				CODE_SIGN_STYLE = Automatic;
 				INFOPLIST_FILE = MagazineLayoutExampleAppleTV/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.6;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -368,7 +370,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				SWIFT_VERSION = 5.0;
-				TVOS_DEPLOYMENT_TARGET = 13.0;
+				TVOS_DEPLOYMENT_TARGET = 15.0;
 			};
 			name = Release;
 		};
@@ -424,7 +426,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.6;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -481,7 +483,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.6;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -500,7 +502,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = 5Q5SGQT2R4;
 				INFOPLIST_FILE = MagazineLayoutExample/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -522,7 +524,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = 5Q5SGQT2R4;
 				INFOPLIST_FILE = MagazineLayoutExample/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",

MagazineLayout.xcodeproj/project.pbxproj

@@ -550,7 +550,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -562,6 +562,7 @@
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 5.0;
+				TVOS_DEPLOYMENT_TARGET = 12.0;
 			};
 			name = Debug;
 		};
@@ -578,7 +579,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -591,6 +592,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-O";
 				SWIFT_VERSION = 5.0;
+				TVOS_DEPLOYMENT_TARGET = 12.0;
 			};
 			name = Release;
 		};
@@ -602,6 +604,7 @@
 				CODE_SIGN_STYLE = Manual;
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = Tests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 12;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -611,6 +614,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_VERSION = 5.0;
+				TVOS_DEPLOYMENT_TARGET = 12;
 			};
 			name = Debug;
 		};
@@ -622,6 +626,7 @@
 				CODE_SIGN_STYLE = Manual;
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = Tests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 12;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -631,6 +636,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_VERSION = 5.0;
+				TVOS_DEPLOYMENT_TARGET = 12;
 			};
 			name = Release;
 		};