Correct errors on unittest and remove unnecessary samples
Add more tests and modify tikz.Profiler accordingly
Add no-success test
Add new tests and fix backends not being called
Fix failure of no success
Updates tikz init documentation
Modify yaml parser to raise error on invalid option
Verify if the solver has no solved problems
Raises error on duplicated problem
Update examples, ordering and removing duplicates
Merge pull request #108 from abelsiqueira/unittests-fixes

Updated unit tests with fixes. Travis should build successfully