bump version to 0.4.0, since that's the one we're working on
// The Wren semantic version number components.
#define WREN_VERSION_MAJOR 0
-#define WREN_VERSION_MINOR 3
+#define WREN_VERSION_MINOR 4
#define WREN_VERSION_PATCH 0
// A human-friendly string representation of the version.
-#define WREN_VERSION_STRING "0.3.0"
+#define WREN_VERSION_STRING "0.4.0"
// A monotonically increasing numeric representation of the version number. Use
// this if you want to do range checks over versions.
