CRAN release requirements

[pearsonca]

• add CI/CD for testing, linting, check as cran, others?
• finalize API - what's in, what's out
• open capability desires - decide what is in vs out (prefer out), and then ensure API supports future addition without breaking changes (e.g. automatically inferred from data, provided as a mode = ... argument which will add more valid values in the future, etc)
  • support multi-location [both parallelization + information pooling],
  • forecasting other objectives [only support counts currently, want proportions etc])
• any required vignettes/documentation (e.g. is the forecasting intro / decision tree needed?)