Tidy up declarations and files:

* Adjust formatting
* Fix inline namespace warning in main.cpp
* Fix streambuf op ambiguous variadic constructor
* Rename variables for clarity

include/beast/websocket/impl/read_frame_op.ipp

@@ -12,6 +12,7 @@
 #include <beast/handler_alloc.hpp>
 #include <beast/prepare_buffers.hpp>
 #include <beast/static_streambuf.hpp>
+#include <boost/optional.hpp>
 #include <cassert>
 #include <memory>
 

include/beast/websocket/impl/ssl.ipp

@@ -60,11 +60,9 @@ public:
     template<class DeducedHandler>
     explicit
     teardown_ssl_op(
-        DeducedHandler&& h,
-            stream_type& stream)
+            DeducedHandler&& h, stream_type& stream)
         : d_(std::make_shared<data>(
-            std::forward<DeducedHandler>(h),
-                stream))
+            std::forward<DeducedHandler>(h), stream))
     {
         (*this)(error_code{}, false);
     }

include/beast/websocket/impl/teardown.ipp

@@ -32,8 +32,7 @@ class teardown_tcp_op
         int state = 0;
 
         template<class DeducedHandler>
-        data(DeducedHandler&& h_,
-                socket_type& socket_)
+        data(DeducedHandler&& h_, socket_type& socket_)
             : socket(socket_)
             , h(std::forward<DeducedHandler>(h_))
             , cont(boost_asio_handler_cont_helpers::