Clean up some FIXMEs
#618 Use filtered streaming in crossfold
Merge pull request #619 from jdekstrand/feature/618-crossfold-filter

Merge the crossfold fix. Closes #618.
Small logging improvements to dep resolution
readme updates [skip ci]
document running the tests [skip ci]
Fix URL for LensKit versioning
Fix broken versioning URL.
Don't reference now-obsolete baseline predictor class
Skip Python-based tests if Python and Pandas are not available
Require Python to be working in CI builds
Update e-mail address
Simplify Travis builds
Add Sonar Runner support
Integrate Sonar build preparations
Drop unneeded 'skips'
Upload archive sin CI build
Fix upload-archives dependencies
Fix sonarRunner dependenci
Use git command line for git