diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..c924040
Binary files /dev/null and b/.DS_Store differ
diff --git a/Croc.xcodeproj/project.pbxproj b/Croc.xcodeproj/project.pbxproj
index 370aef0..1047a01 100644
--- a/Croc.xcodeproj/project.pbxproj
+++ b/Croc.xcodeproj/project.pbxproj
@@ -612,7 +612,7 @@
 				PRODUCT_NAME = Croc;
 				SKIP_INSTALL = YES;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -635,7 +635,7 @@
 				PRODUCT_NAME = Croc;
 				SKIP_INSTALL = YES;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
@@ -653,7 +653,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -671,7 +671,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
@@ -694,7 +694,7 @@
 				PRODUCT_NAME = Croc;
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
@@ -718,7 +718,7 @@
 				PRODUCT_NAME = Croc;
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
@@ -741,7 +741,7 @@
 				PRODUCT_NAME = Croc;
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
@@ -764,7 +764,7 @@
 				PRODUCT_NAME = Croc;
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
@@ -783,7 +783,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = appletvos;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 11.2;
 			};
@@ -802,7 +802,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = appletvos;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 11.2;
 			};
@@ -829,7 +829,7 @@
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -854,7 +854,7 @@
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -873,7 +873,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = macosx;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -892,7 +892,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SDKROOT = macosx;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -954,7 +954,7 @@
 				SDKROOT = iphoneos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -1012,7 +1012,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
diff --git a/Example/Source/AppDelegate.swift b/Example/Source/AppDelegate.swift
index 1c93c5d..0adf153 100644
--- a/Example/Source/AppDelegate.swift
+++ b/Example/Source/AppDelegate.swift
@@ -14,7 +14,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     var window: UIWindow?
 
 
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+    private func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         // Override point for customization after application launch.
         return true
     }
diff --git a/Example/iOS Example.xcodeproj/project.pbxproj b/Example/iOS Example.xcodeproj/project.pbxproj
index 2015f1f..9b3f13c 100644
--- a/Example/iOS Example.xcodeproj/project.pbxproj	
+++ b/Example/iOS Example.xcodeproj/project.pbxproj	
@@ -402,7 +402,7 @@
 				ONLY_ACTIVE_ARCH = NO;
 				PRODUCT_BUNDLE_IDENTIFIER = com.jkalash.CrocExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -416,7 +416,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.jkalash.CrocExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
diff --git a/Source/Character+Unicode.swift b/Source/Character+Unicode.swift
index 77a4420..2be7d51 100644
--- a/Source/Character+Unicode.swift
+++ b/Source/Character+Unicode.swift
@@ -54,7 +54,7 @@ public extension Character {
     /// - Parameter char: a Character. Note: Only render first code point to prevent
     /// - Returns: a Portable Network Graphic (png), as Data optional
     func png(ofSize fontSize: CGFloat) -> Data? {
-        let attributes = [NSAttributedStringKey.font: UIFont.systemFont(ofSize: fontSize)]
+        let attributes = [NSAttributedString.Key.font: UIFont.systemFont(ofSize: fontSize)]
         let charStr = "\(self)" as NSString
         let size = charStr.size(withAttributes: attributes)
         
@@ -63,7 +63,7 @@ public extension Character {
         
         var png:Data? = nil
         if let charImage = UIGraphicsGetImageFromCurrentImageContext() {
-            png = UIImagePNGRepresentation(charImage)
+            png = charImage.pngData()
         }
         
         UIGraphicsEndImageContext()
diff --git a/py/.DS_Store b/py/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/py/.DS_Store differ
diff --git a/py/emoji-test.txt b/py/emojis.txt
similarity index 100%
rename from py/emoji-test.txt
rename to py/emojis.txt
diff --git a/py/parse.py b/py/parse.py
index 8685e64..a82dc54 100644
--- a/py/parse.py
+++ b/py/parse.py
@@ -3,7 +3,7 @@
 import json
 
 def strip_emojis(line):
-	PERMITTED_CHARS = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-: " 
+	PERMITTED_CHARS = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-: "
 	return "".join(c for c in line if c in PERMITTED_CHARS)
 
 
@@ -12,7 +12,7 @@ def chomp(x):
     if x.endswith("\n"): return x[:-1]
     return x
 
-lines = list(open("emoji-test.txt"))
+lines = list(open("emojis.txt"))
 emojis = dict()
 
 group_name = ""
@@ -28,7 +28,7 @@ def chomp(x):
 	elif line.startswith("Subgroup: "):
 		subgroup_name = chomp(line.replace("Subgroup: ", ""))
 		emojis[group_name][subgroup_name] = list()
-	#3. 
+	#3.
 	else:
 		#Lines containing _DISCARD_ should be discarded..
 		if "_DISCARD_" in line:
@@ -45,4 +45,4 @@ def chomp(x):
 
 #Write emojis to JSON file
 with open('emojis.json', 'w') as fp:
-	json.dump(emojis, fp)
\ No newline at end of file
+	json.dump(emojis, fp)