Update project version to v0.1.8

Change-Id: I3c52103e4c0536b18be6c5667b053dedbf514347
Reviewed-on: https://codereview.kdab.com/c/kdab/kdutils/+/134738
Tested-by: Continuous Integration <build@kdab.com>
Reviewed-by: Miłosz Kosobucki <milosz.kosobucki@kdab.com>

CMakeLists.txt

@@ -13,7 +13,7 @@ project(
     KDUtils
     DESCRIPTION "A set of C++ helpers and wrappers around the C++ standard library"
     LANGUAGES CXX C
-    VERSION 0.1.7
+    VERSION 0.1.8
     HOMEPAGE_URL "https://github.com/KDAB/KDUtils"
 )