diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9944beb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+AKNumericFormatter/AKNumericFormatter.xcodeproj/project.xcworkspace
diff --git a/AKNumericFormatter.podspec b/AKNumericFormatter.podspec
index 3dd3a03..e8cae38 100644
--- a/AKNumericFormatter.podspec
+++ b/AKNumericFormatter.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name         = "AKNumericFormatter"
   s.platform     = :ios
-  s.version      = "0.0.2"
+  s.version      = "0.0.4"
   s.summary      = "Formatter for numerical fields and UITextField category to use it easily while editing."
   s.homepage     = "https://github.com/blackm00n/AKNumericFormatter"
   s.license      = 'MIT'
diff --git a/AKNumericFormatter/AKNumericFormatter.xcodeproj/project.pbxproj b/AKNumericFormatter/AKNumericFormatter.xcodeproj/project.pbxproj
index 5ce670e..6b6043f 100644
--- a/AKNumericFormatter/AKNumericFormatter.xcodeproj/project.pbxproj
+++ b/AKNumericFormatter/AKNumericFormatter.xcodeproj/project.pbxproj
@@ -176,7 +176,7 @@
 		AF345437FEE113DA3E99D66C /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0500;
+				LastUpgradeCheck = 0900;
 				ORGANIZATIONNAME = "Aleksey Kozhevnikov";
 			};
 			buildConfigurationList = AF345A0A9A5DE462FED285D0 /* Build configuration list for PBXProject "AKNumericFormatter" */;
@@ -253,7 +253,6 @@
 		AF345139BBBD675A652B4291 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_INCLUDING_64_BIT)";
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(SDKROOT)/Developer/Library/Frameworks",
 					"$(inherited)",
@@ -261,6 +260,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "AKNumericFormatter/AKNumericFormatter-Prefix.pch";
 				INFOPLIST_FILE = "AKNumericFormatterTests/AKNumericFormatterTests-Info.plist";
+				PRODUCT_BUNDLE_IDENTIFIER = "me.akozhevnikov.${PRODUCT_NAME:rfc1034identifier}";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = xctest;
 			};
@@ -269,10 +269,11 @@
 		AF34515084F33504F2653EAD /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_INCLUDING_64_BIT)";
+				CLANG_CXX_LIBRARY = "compiler-default";
 				DSTROOT = /tmp/AKNumericFormatter.dst;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "AKNumericFormatter/AKNumericFormatter-Prefix.pch";
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -287,17 +288,29 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
@@ -310,7 +323,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 			};
@@ -324,24 +337,35 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = YES;
 				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;
 			};
@@ -350,10 +374,12 @@
 		AF345B7BA0B49D5CEE5C2F79 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_INCLUDING_64_BIT)";
+				CLANG_CXX_LIBRARY = "compiler-default";
 				DSTROOT = /tmp/AKNumericFormatter.dst;
+				GCC_OPTIMIZATION_LEVEL = 1;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "AKNumericFormatter/AKNumericFormatter-Prefix.pch";
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -363,7 +389,6 @@
 		AF345BB2E145268599E02AE3 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_INCLUDING_64_BIT)";
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(SDKROOT)/Developer/Library/Frameworks",
 					"$(inherited)",
@@ -371,6 +396,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "AKNumericFormatter/AKNumericFormatter-Prefix.pch";
 				INFOPLIST_FILE = "AKNumericFormatterTests/AKNumericFormatterTests-Info.plist";
+				PRODUCT_BUNDLE_IDENTIFIER = "me.akozhevnikov.${PRODUCT_NAME:rfc1034identifier}";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = xctest;
 			};
diff --git a/AKNumericFormatter/AKNumericFormatter/AKNumericFormatter-Prefix.pch b/AKNumericFormatter/AKNumericFormatter/AKNumericFormatter-Prefix.pch
index 4b6a1b8..daf5269 100644
--- a/AKNumericFormatter/AKNumericFormatter/AKNumericFormatter-Prefix.pch
+++ b/AKNumericFormatter/AKNumericFormatter/AKNumericFormatter-Prefix.pch
@@ -5,5 +5,10 @@
 //
 
 #ifdef __OBJC__
+#if __has_feature(modules)
 @import Foundation;
-#endif
\ No newline at end of file
+#else
+#import <Foundation/Foundation.h>
+#endif
+#endif
+
diff --git a/AKNumericFormatter/AKNumericFormatter/UITextField+AKNumericFormatter.h b/AKNumericFormatter/AKNumericFormatter/UITextField+AKNumericFormatter.h
index 67e62b8..da1f978 100644
--- a/AKNumericFormatter/AKNumericFormatter/UITextField+AKNumericFormatter.h
+++ b/AKNumericFormatter/AKNumericFormatter/UITextField+AKNumericFormatter.h
@@ -3,7 +3,14 @@
 // file 'LICENSE', which is part of this source code package.
 //
 
+#if __has_feature(modules)
 @import UIKit;
+#else
+#import <UIKit/UIKit.h>
+#endif
+
+
+
 @class AKNumericFormatter;
 
 @interface UITextField(AKNumericFormatter)
@@ -17,4 +24,4 @@
 // when replacementString's length is zero.
 -(void)alertDeleteBackwards;
 
-@end
\ No newline at end of file
+@end
diff --git a/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests-Info.plist b/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests-Info.plist
index 65cfd92..169b6f7 100644
--- a/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests-Info.plist
+++ b/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests-Info.plist
@@ -2,24 +2,21 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-
-    <key>CFBundleIdentifier</key>
-    <string>me.akozhevnikov.${PRODUCT_NAME:rfc1034identifier}</string>
-
-    <key>CFBundleExecutable</key>
-    <string>${EXECUTABLE_NAME}</string>
-    <key>CFBundleInfoDictionaryVersion</key>
-    <string>6.0</string>
-    <key>CFBundleShortVersionString</key>
-    <string>1.0</string>
-    <key>CFBundleVersion</key>
-    <string>1</string>
-    <key>CFBundleDevelopmentRegion</key>
-    <string>en</string>
-    <key>CFBundlePackageType</key>
-    <string>BNDL</string>
-    <key>CFBundleSignature</key>
-    <string>????</string>
-
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>${EXECUTABLE_NAME}</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
 </dict>
-</plist>
\ No newline at end of file
+</plist>
diff --git a/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests.m b/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests.m
index 377d2f4..fa9e8e4 100644
--- a/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests.m
+++ b/AKNumericFormatter/AKNumericFormatterTests/AKNumericFormatterTests.m
@@ -3,7 +3,11 @@
 // file 'LICENSE', which is part of this source code package.
 //
 
+#if __has_feature(modules)
 @import XCTest;
+#else
+#import <XCTest/XCTest.h>
+#endif
 
 #import "AKNumericFormatter.h"