Limit to django-oscar<1.0

As the shipping methods were changed there.
Bump version to 0.1.1
Merge branch 'master' into pr/3

Conflicts:
	setup.py
Add the 'LineNo' to the cache key
Bump version to 0.2
Extend Makefile with release target
Fix submit method
remove Django<1.7 requirement
Merge branch 'fix-post-tax' into rc/0.1