Update CMakeLists.txt - Updated version number for Cmake Lists too . . .

Forgot to change it as well . . .

Important when building Koi from source . . .

Author: MartinVonReichenberg

src/CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.16)
-project(Koi VERSION 0.2.3 LANGUAGES CXX)
+project(Koi VERSION 0.2.4 LANGUAGES CXX)
 
 configure_file(headers/config.h.in config.h)
 include_directories(${CMAKE_CURRENT_BINARY_DIR})