diff --git a/307lib b/307lib
index 1428369..bffef31 160000
--- a/307lib
+++ b/307lib
@@ -1 +1 @@
-Subproject commit 1428369952521dfc0a993d4d3f89c37ecb0c81bf
+Subproject commit bffef312d3fb0d2b14c2a416e4ff852de9d0a08e
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 949316f..fe66c01 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,13 +1,13 @@
-# convutils
-cmake_minimum_required(VERSION 3.15)
+# convutils/
+cmake_minimum_required(VERSION 3.20)
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/307lib/307modules")
 
-set(ENV{CONV_VERSION} "0.0.0")
+set(ENV{CONV2_VERSION} "0.0.0")
 include(VersionTag)
-GET_VERSION_TAG("${CMAKE_CURRENT_SOURCE_DIR}" "CONV")
+GET_VERSION_TAG("${CMAKE_CURRENT_SOURCE_DIR}" "CONV2")
 
-project(convutils VERSION ${CONV_VERSION} LANGUAGES CXX)
+project(convutils VERSION "${CONV2_VERSION}" LANGUAGES CXX)
 
 add_subdirectory("307lib")
 
diff --git a/conv2/CMakeLists.txt b/conv2/CMakeLists.txt
index 25f3475..118ade5 100644
--- a/conv2/CMakeLists.txt
+++ b/conv2/CMakeLists.txt
@@ -1,14 +1,22 @@
 # conv-utils/conv2
-cmake_minimum_required(VERSION 3.15)
+cmake_minimum_required(VERSION 3.20)
 
 if (MSVC)
 	set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 endif()
 
+if(NOT "${CONV2_VERSION_EXTRA0}" STREQUAL "")
+	set(CONV2_VERSION_FULL "${CONV2_VERSION}-${CONV2_VERSION_EXTRA0}" CACHE INTERNAL "")
+	message(STATUS "[STATUS]:  Version number contains more than 3 segments, the 4th segment will be included in (version.h)")
+else()
+	set(CONV2_VERSION_FULL "${CONV2_VERSION}" CACHE INTERNAL "")
+	message(STATUS "[STATUS]:  Using version number \"${CONV2_VERSION_FULL}\"")
+endif()
+
 MAKE_VERSION_HEADER(
 	"${CMAKE_CURRENT_SOURCE_DIR}/version.h"
 	"CONV2"
-	"${CONV_VERSION}"
+	"${CONV2_VERSION_FULL}"
 )
 
 file(GLOB HEADERS
@@ -22,12 +30,10 @@ add_executable(conv2 "main.cpp")
 set_property(TARGET conv2 PROPERTY CXX_STANDARD 20)
 set_property(TARGET conv2 PROPERTY CXX_STANDARD_REQUIRED ON)
 if (MSVC)
-	target_compile_options(conv2 PUBLIC "/Zc:__cplusplus")
+	target_compile_options(conv2 PUBLIC "/Zc:__cplusplus" "/Zc:preprocessor")
 endif()
 
-include(PrependEach)
-PREPEND_EACH(HEADERS_ABS "${HEADERS}" "${CMAKE_CURRENT_SOURCE_DIR}/")
-target_sources(conv2 PUBLIC "$<BUILD_INTERFACE:${HEADERS_ABS}>" "$<INSTALL_INTERFACE:${HEADERS}>")
+target_sources(conv2 PUBLIC "${HEADERS}")
 
 target_link_libraries(conv2 PUBLIC shared strlib TermAPI optlib convlib)
 
diff --git a/conv2/main.cpp b/conv2/main.cpp
index 8b7cc71..3e1453e 100644
--- a/conv2/main.cpp
+++ b/conv2/main.cpp
@@ -17,7 +17,7 @@ struct PrintHelp {
 	friend std::ostream& operator<<(std::ostream& os, const PrintHelp& h)
 	{
 		if (h._param.empty()) {// unscoped help
-			os << "conv2  " << CONV2_VERSION << '\n'
+			os << "conv2  " << CONV2_VERSION_EXTENDED << '\n'
 				<< "  A commandline conversion utility.\n"
 				<< '\n'
 				<< "USAGE:\n"
diff --git a/convlib/CMakeLists.txt b/convlib/CMakeLists.txt
index 1b0d433..f73de43 100644
--- a/convlib/CMakeLists.txt
+++ b/convlib/CMakeLists.txt
@@ -1,18 +1,15 @@
 # convutils/convlib
-cmake_minimum_required(VERSION 3.15)
+cmake_minimum_required(VERSION 3.20)
 
 if (MSVC)
 	set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 endif()
 
-# Create project
-project(convlib VERSION ${CONV_VERSION} LANGUAGES CXX)
-
 # Get library headers & source files
 file(GLOB HEADERS
 	RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
 	CONFIGURE_DEPENDS
-	"include/*.h"
+	"include/*.h*"
 )
 file(GLOB SRCS 
 	RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
@@ -21,13 +18,14 @@ file(GLOB SRCS
 )
 
 # Create static library
-add_library(convlib STATIC ${SRCS})
+add_library(convlib STATIC "${SRCS}")
 
 # Set library properties
 set_property(TARGET convlib PROPERTY CXX_STANDARD 20)
 set_property(TARGET convlib PROPERTY CXX_STANDARD_REQUIRED ON)
+set_property(TARGET convlib PROPERTY POSITION_INDEPENDENT_CODE ON)
 if (MSVC)
-	target_compile_options(convlib PUBLIC "/Zc:__cplusplus")
+	target_compile_options(convlib PUBLIC "/Zc:__cplusplus" "/Zc:preprocessor")
 endif()
 
 # Include library headers