Initial commit of API sketch
set_metadata -> attach_metadata
proposed python API
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'

Conflicts:
	backslash/session.py
	backslash/test.py
logical_id and product parameters
bug fix
order in branch and session_id optional
commit before rebase
Merge branch 'master' of https://github.com/vmalloc/backslash-python
Merge pull request #2 from yotamr/master

code so far