Fix for unclosed temp files creating bad .pngs in specs
Add an integration spec for checkbox groups
Organize Template spec a little better using contexts
Add test coverage report using SimpleCov
Remove unused instance variables from Ravager
Encapsulate document manipulation using strategy pattern
Another fix for integration spec deleting temp files too early
Add "Smart" strategy that tries AcroForm then XFA strategies
Bump to 0.2.0 and add CHANGELOG