Start to separate scripts out for installation.
Fix indentation.
Fixed up hxl2geojson command.
Minor script refactoring.
Update usage info.
Refactor to use argparse.
Refactor comments and formatting in scripts.
Update script examples.
Start roughing in error reporting.
Added error reporting for type checking.
Test error reporting for all data types.
Error reporting for regular-expression patterns.
Simplify unit tests (more DRY)