Updated copyright year

README.md

@@ -781,7 +781,7 @@ Note: Windows 8 or lower and Cygwin on Windows are not supported.
 License
 -------
 
-MIT license (© 2020 Yuji Hirose)
+MIT license (© 2021 Yuji Hirose)
 
 Special Thanks To
 -----------------

example/ssesvr.cc

@@ -1,10 +1,3 @@
-//
-//  sse.cc
-//
-//  Copyright (c) 2020 Yuji Hirose. All rights reserved.
-//  MIT License
-//
-
 #include <atomic>
 #include <chrono>
 #include <condition_variable>

httplib.h

@@ -1,7 +1,7 @@
 //
 //  httplib.h
 //
-//  Copyright (c) 2020 Yuji Hirose. All rights reserved.
+//  Copyright (c) 2021 Yuji Hirose. All rights reserved.
 //  MIT License
 //