Bump version

src/config.h

@@ -7,7 +7,7 @@
 
 #include "platform.h"
 
-#define CROWN_VERSION "0.0.20"
+#define CROWN_VERSION "0.0.21"
 
 #ifndef CROWN_DEBUG
 	#define CROWN_DEBUG 0

tools/config.vala

@@ -5,7 +5,7 @@
 
 namespace Crown
 {
-	const string CROWN_VERSION = "0.0.20";
+	const string CROWN_VERSION = "0.0.21";
 
 #if CROWN_PLATFORM_LINUX
 	const string ENGINE_DIR = "../engine/linux64/bin";