CodeReview changes
Merge commit '1a39462b6c9fcbccae3c734c81ffce0266e32359'

Conflicts:
	backslash/session.py
set user
Merge branch 'master' of https://github.com/vmalloc/backslash-python
add_metadata
code review fixes
Merge pull request #4 from yotamr/master

add_user and add_metadata