Bump version to 0.18.3.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1800db9..84a2191 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@
 
 set(PROJECT_VERSION_MAJOR 0)
 set(PROJECT_VERSION_MINOR 18)
-set(PROJECT_VERSION_PATCH 2)
+set(PROJECT_VERSION_PATCH 3)
 set(PROJECT_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH} )
 
 add_subdirectory(src)