Deprecate chunks. Debug -O

CryptoSwift.xcodeproj/project.pbxproj

@@ -713,7 +713,6 @@
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = CryptoSwift;
 				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos macosx appletvos watchos appletvsimulator watchsimulator";
-				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
@@ -769,7 +768,6 @@
 				METAL_ENABLE_DEBUG_INFO = NO;
 				PRODUCT_NAME = CryptoSwift;
 				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos macosx appletvos watchos appletvsimulator watchsimulator";
-				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
@@ -796,7 +794,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.krzyzanowskim.CryptoSwift;
 				PRODUCT_NAME = CryptoSwift;
 				SKIP_INSTALL = YES;
-				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 4.0;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
@@ -921,7 +918,6 @@
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = CryptoSwift;
 				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos macosx appletvos watchos appletvsimulator watchsimulator";
-				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;

Sources/CryptoSwift/Array+Extension.swift

@@ -27,7 +27,8 @@ extension Array {
 
 extension Array {
 
-    /** split in chunks with given chunk size */
+    /// split in chunks with given chunk size
+    @available(*, deprecated: 0.8.0, message: "")
     public func chunks(size chunksize: Int) -> Array<Array<Element>> {
         var words = Array<Array<Element>>()
         words.reserveCapacity(count / chunksize)