Merge commit '8feddb46e8b82abfcbb6f3ac606bd1fcde3669ca' into swift-2

* commit '8feddb46e8b82abfcbb6f3ac606bd1fcde3669ca':
  Update to swift on XCode 7 Beta 6
  Update to Swift 2.0

# Conflicts:
#	Base32.xcodeproj/project.pbxproj
#	Base32.xcodeproj/project.xcworkspace/xcshareddata/Base32.xcscmblueprint
#	Base32/Base16.swift
#	Base32/Base32.swift
#	Base32Tests/Base32Tests.swift

close #11

Base32.xcodeproj/project.pbxproj

@@ -613,6 +613,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 6CA0A7CB1A74E88E00AC539F /* Mac-Framework.xcconfig */;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
@@ -624,6 +625,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 6CA0A7CB1A74E88E00AC539F /* Mac-Framework.xcconfig */;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
@@ -655,6 +657,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 6CA0A7C51A74E88E00AC539F /* iOS-Framework.xcconfig */;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
@@ -666,6 +669,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 6CA0A7C51A74E88E00AC539F /* iOS-Framework.xcconfig */;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;