Add non-ASCII chars to create_test_resources.py

Better for testing
Don't use format() with logging

It's not necessary
Revert "Don't use format() with logging"

This reverts commit 6c26f4472f32a4041e4a4e0a633c6b70c8fef177.

Looks like only old-style %s formatting works with logging.
Use unicode string literals
Unicode fixes
Better display of broken datasets with no maintainer
README fixes
Bump version number