Explicitly include required headers

Author: Gandalf-the-Grey

libraries/chain/include/hive/chain/full_transaction.hpp

@@ -4,6 +4,7 @@
 #include <chrono>
 #include <mutex>
 #include <atomic>
+#include <variant>
 
 namespace hive { namespace chain {
 

libraries/chainbase/include/chainbase/allocators.hpp

@@ -15,6 +15,7 @@
 #include <boost/thread.hpp>
 #include <boost/thread/locks.hpp>
 
+#include <deque>
 #include <type_traits>
 
 namespace chainbase {

programs/beekeeper/beekeeper/beekeeper_instance.cpp

@@ -7,6 +7,8 @@
 #include <boost/exception/diagnostic_information.hpp>
 #include <boost/filesystem.hpp>
 
+#include <fstream>
+
 namespace beekeeper {
   namespace bfs = boost::filesystem;