Upgrade versions of test tools
Merge remote-tracking branch 'origin/master'
Merge branch 'bugfix_blank_node' of github.com:globocom/simple-virtuoso-migrate into bugfix_blank_node
Refactor virtuoso.py naming
Add tests dependencies to requirements_test, so it is compatible to setup.py dependencies.
Refactoring virtuoso.py:_generate_migration_sparql_commands (names)