Update version number in CMakeLists.txt to 0.8.1

Author: c72578

CMakeLists.txt

@@ -24,7 +24,7 @@ endif ()
 ############ Project name and version
 set (WEBSOCKETPP_MAJOR_VERSION 0)
 set (WEBSOCKETPP_MINOR_VERSION 8)
-set (WEBSOCKETPP_PATCH_VERSION 0)
+set (WEBSOCKETPP_PATCH_VERSION 1)
 set (WEBSOCKETPP_VERSION ${WEBSOCKETPP_MAJOR_VERSION}.${WEBSOCKETPP_MINOR_VERSION}.${WEBSOCKETPP_PATCH_VERSION})
 
 if(POLICY CMP0048)