Identify given/family names and capitalize correctly

Changes for 1.003 - 2023-07-09

• doc - Fixes and improvements
• Fix normalize buglet - add underlying data as well
• Suppress Lingua::JA::Name::Splitter warnings for short names
• Fix case exception bug - built-in exceptions not initialized if namecase_exception called before namecase
• Add a few more tests for (unreported) branch coverage