Merge pull request #156 from omergertel/dev

Add str to cleaup
Cosmetics
Exchange __str__ for __repr__
More detailed test summary (#157)
v0.7.0
Add option to serialize warnings to dicts (#160)
Remove unnecessary test
Add warning parameter in tests
Properly handle relative symlink paths in logging
changelog
Update configuration doc
Add test repr to beginning of test logs (#161)
Check command line arguments before initializing session
Allow ~ in log paths
Perform test loading before session start (#162)
Save current result under context.result
Refactoring of unit tests
Add -k to select tests by keywords (#163)
Fix python 2.6 compatibility
Fix Python3 compatibility