rbmi 1.6.1

New Features

• rbmi now uses the lifecycle package
• Added en-GB spell-check and a corresponding test to the package

Documentation

• Documented the return value (@return) of all exported functions and marked
  internal helpers with @keywords internal (#567).
• Added executable @examples to the exported user-facing functions that were
  missing them, and marked the internal-only has_class(), validate() and
  longDataConstructor with @keywords internal (#570).

Bug Fixes

• The vignette on retrieved dropout methods is now correctly embedded.
• Fixed numerous spelling errors and standardised nomenclature for missing not
  at random to MNAR (rather than a mix of NMAR and MNAR)
• Deprecated nmar.rm argument of longdata$get_data in favour of mnar.rm
  for nomenclature consistency.
• Fixed a misleading error message in imputation_list_single() where a failure of
  the imputation-count-divisible-by-D check incorrectly reported that "multiple
  ids were detected" (#574)
• Improved CI/CD scripts to reliably fail GitHub CI/CD in case of failing tests.
• Fixed error message for mu$visit in simulate_test_data() to refer to
  visit instead of trt (#578)
• Fixed a bug where each non-ignorable Stan warning from the Bayesian sampler
  was reported multiple times instead of once. (#572)
• Fixed the error message in apply_delta() to correctly refer to data
  instead of dat (#576)
• Fixed the broken GitHub badge in README.md (#548)

Miscellaneous

• Replaced deprecated structure() special name .Dim with dim in unit tests
  to resolve an R CMD check NOTE (#581)
• Updated Marcel Wolbers' e-mail address (#583)