Make the Channel class as a part of public APIs (#90)

Author: an-tao

CMakeLists.txt

@@ -57,8 +57,8 @@ set(TRANTOR_SOURCES
     trantor/net/InetAddress.cc
     trantor/net/TcpClient.cc
     trantor/net/TcpServer.cc
+    trantor/net/Channel.cc
     trantor/net/inner/Acceptor.cc
-    trantor/net/inner/Channel.cc
     trantor/net/inner/Connector.cc
     trantor/net/inner/Poller.cc
     trantor/net/inner/Socket.cc
@@ -118,7 +118,8 @@ set(public_net_headers
     trantor/net/TcpConnection.h
     trantor/net/TcpServer.h
     trantor/net/callbacks.h
-    trantor/net/Resolver.h)
+    trantor/net/Resolver.h
+    trantor/net/Channel.h)
 
 set(public_utils_headers
     trantor/utils/AsyncFileLogger.h

trantor/net/inner/Channel.cc renamed to trantor/net/Channel.cc

@@ -6,7 +6,7 @@
 // Author: Tao An
 
 #include "AresResolver.h"
-#include <trantor/net/inner/Channel.h>
+#include <trantor/net/Channel.h>
 #include <ares.h>
 #ifdef _WIN32
 #include <winsock2.h>