CRAN Version 4.0.1

• A new constraint interface that is more flexible, user friendly, and consistent
  across algorithms (see redist_constr() and ?constraints). For the first time,
  user-defined custom constraints are supported and integrated within all three
  algorithms.
• New diagnostic-checking function, summary.redist_plans()
• Summary statistics have been broken out into a new redistmetrics package
  This will speed up compilation time and also provides a cleaner, more extensible
  interface for the implementation of additional metrics.
• Parallel computing support for the SMC algorithm, both within and across sampling runs
• Reproducible across-run parallelism throughout the package, via doRNG
• Much faster match_numbers() using the Hungarian method
• min_move_parity() calculates how much population needs to be moved between
  districts in order to completely balance a redistricting plan.
• Support for partial SMC simulations, where fewer districts are drawn than the
  total number. Allows advanced users to manually combine partial runs to
  form complete maps.
• Improved algorithm reporting, including new progress bars and cli errors and
  warnings throughout the package
• Update the SMC algorithm to include a missing correction factor for the number
  of ways to sequentially label districts. This factor should not have an effect
  on substantive conclusions and summary statistics.
• Remove deprecated functions
• Many bug fixes (see https://github.com/alarm-redist/redist/issues)