update version and TODO for 2.1 release
diff --git a/src/lib.h b/src/lib.h
index 7093b7f..260b444 100644
--- a/src/lib.h
+++ b/src/lib.h
@@ -41,8 +41,8 @@
 #define _(STRING)    (STRING)
 #endif
 
-#define POWERTOP_VERSION "v2.0"
-#define POWERTOP_SHORT_VERSION "2.0"
+#define POWERTOP_VERSION "v2.1"
+#define POWERTOP_SHORT_VERSION "2.1"
 
 
 extern int get_max_cpu(void);