Test improvements

[msrutek-paylocity]

• private where appropriate
• final where appropriate
• Call super.setUp() - to be a good citizen
• Added tearDown() method to correctly deinitialize test objects
• Fixed a couple of typos

[danielsaidi]

Thank you so much @msrutek-paylocity

I'm releasing a 0.9.3 now, with your changes and Catalyst support.