ENH: Improving sample dataset tracking
FIX: Fixing no-directory and no-var bugs
FIX: Fixing sample data path logic
FIX: Removing relative paths in examples
FIX: Adding tests for config
ENH: Adding download status
ENH: Using JSON
FIX: Throw KeyError
ENH+FIX: Adding MEGSIM support, fixing minor testing bug
FIX: Minor fixes
ENH: More usable MEGSIM functionality
ENH: Better docs
FIX: Correct path in docstring
ENH: Unzipping automatically