--create dataframe to xml marshaller

--xrange to range

--refactor pydevd_save_locals to avoid deadlocks caused by import lock being taken after debugger lock

In Py3k we start script via our custom `execfile` function, and we shouldn't stop there while stepping when execution is finished

--Properly resolve types in the debugger using the fully qualified type name

--Make pydevd_xml return FQN name

Remove condition about gevent installed on interpreter. There is no need for such check anymore, because multithreading debugging was fixed (PY-18823), but it breaks support for other patching libraries such as eventlet.

We shouldn't update sys.modules for the main thread, cause it leads to the second importing 'threading' module, and the new instance of main thread is created. In this case we lose thread id and thread additional info, so it totally breaks the debugger.

Create a separate resolver for Django forms in order to prevent calling self.errors because it is a property and has side effects. Also We shouldn't call str(), because it also has side effects.

The correct way to ignore libraries, even if virtual env is situated inside project directory (PY-16899)

Do not stop if the frame is traced after breakpoint stop, but the file should be ignored while stepping because of filters (PY-18493)