Don't focre c11

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@
 
 project(libtransport)
 
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 14)
 if(WIN32)
 	set(CMAKE_CXX_STANDARD 17)
 endif(WIN32)