Bump to 0.18.1

Author: dnbaker

include/sketch/common.h

@@ -49,7 +49,7 @@
 #define SKETCH_SHIFT 8
 #define SKETCH_MAJOR 0
 #define SKETCH_MINOR 18
-#define SKETCH_REVISION 0
+#define SKETCH_REVISION 1
 #define SKETCH_VERSION_INTEGER ((((SKETCH_MAJOR << SKETCH_SHIFT) | SKETCH_MINOR) << SKETCH_SHIFT) | SKETCH_REVISION)
 #define SKETCH_VERSION SKETCH_MAJOR.SKETCH_MINOR##SKETCH_REVISION
 #define SKETCH_VERSION_STR sk__xstr__(SKETCH_MAJOR.SKETCH_MINOR.SKETCH_REVISION)