Fix bug with unicode object and XML parser
After long investigation during the morning I found that Unicode problem was coming from expat used in Emerald Tree. I wrote patch and test to show how the problem can be fixed (using encoded ByteString)
http://paste.pocoo.org/show/237023/
Implement recursive section support for DocBook_IN
The DocBook_IN converter can now retrieve the depth of any element. For that I adding depth parameters for all the method. So the implementation of the recursive section became easier.