and tally marks)
- **NOTE**: this change means the maximum value of common/default config is
     3,999; 399,999 for 'compact' apostrophus', and 3,999,999 for both
     tally mark apostrophus and vinculum styles.
 - Housekeeping for bigger Dart update, as well as `test` and `analyze`
   cleanup.
 - Improved code coverage report generation to be "pure Dart" and scripted.