Update version to 5.0.4

Author: petebunting

CMakeLists.txt

@@ -28,7 +28,7 @@ set (PROJECT_DATA_DIR share)
 # The version number.
 set (RSGISLIB_VERSION_MAJOR 5)
 set (RSGISLIB_VERSION_MINOR 0)
-set (RSGISLIB_VERSION_PATCH 3)
+set (RSGISLIB_VERSION_PATCH 4)
 set (RSGISLIB_VERSION "${RSGISLIB_VERSION_MAJOR}.${RSGISLIB_VERSION_MINOR}.${RSGISLIB_VERSION_PATCH}")
 set (RSGISLIB_PACKAGE_VERSION "${RSGISLIB_VERSION_MAJOR}.${RSGISLIB_VERSION_MINOR}.${RSGISLIB_VERSION_PATCH}")
 set (RSGISLIB_PACKAGE_STRING "RSGISLib ${RSGISLIB_VERSION_MAJOR}.${RSGISLIB_VERSION_MINOR}.${RSGISLIB_VERSION_PATCH}")