Merge pr #18: version increment to 2.0.0

Version increment to 2.0.0

Author: mikucionisaau

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.15)
 cmake_policy(SET CMP0048 NEW) # project() command manages VERSION variables
-project(UUtils VERSION 1.2.0 HOMEPAGE_URL "https://github.com/UPPAALModelChecker/UUtils" LANGUAGES CXX C)
+project(UUtils VERSION 2.0.0 HOMEPAGE_URL "https://github.com/UPPAALModelChecker/UUtils" LANGUAGES CXX C)
 include(CMakePackageConfigHelpers)
 include(GNUInstallDirs)
 include(FetchContent)