Add version added

Author: gaogaotiantian

Doc/library/bdb.rst

@@ -164,11 +164,15 @@ The :mod:`bdb` module also defines two classes:
       Start tracing. For ``'settrace'`` backend, this method is equivalent to
       ``sys.settrace(self.trace_dispatch)``
 
+      .. versionadded:: 3.14
+
    .. method:: stop_trace(self)
 
       Stop tracing. For ``'settrace'`` backend, this method is equivalent to
       ``sys.settrace(None)``
 
+      .. versionadded:: 3.14
+
    .. method:: reset()
 
       Set the :attr:`!botframe`, :attr:`!stopframe`, :attr:`!returnframe` and
@@ -397,13 +401,17 @@ The :mod:`bdb` module also defines two classes:
       called. This is helpful when the debugger is not interested in the current
       line.
 
+      .. versionadded:: 3.14
+
    .. method:: restart_events()
 
       Restart all the disabled events. This function is automatically called in
       ``dispatch_*`` methods after ``user_*`` methods are called. If the
       ``dispatch_*`` methods are not overridden, the disabled events will be
       restarted after each user interaction.
 
+      .. versionadded:: 3.14
+
 
    Derived classes and clients can call the following methods to get a data
    structure representing a stack trace.