Rename assertEquals --> assertEqual
Move pyfea.utils --> pyfea.util
Add generated standalone py.test script
Add pyfea.util.checksum.md5sum
Add pyfea.orm

- add Model class along with a simple test describing what we want
- add pyfea.orm.models for the database mapping
- add pyfea-test-assets.git submodule
Introduce pyfea.orm.database
Move isiterable
Add solver property to pyfea.model.Model
Auto discover test assets

Add Bendersky's FileFinder class, idea for deducing the solver type for
a given file, minor stuff.