Changes in version 0.2.6                        

  - Add option varmethod = "none" for calc_tfr().

                        Changes in version 0.2.5                        

  - Lots of cleanup on package elements and documentation to pass R CMD
    CHECK (thanks @chacalle).
  - Remove data.table from vignettes and Suggests.

                        Changes in version 0.2.4                        

  - Bugfix in calc_nqx() to allow user-specified column name for death
    outcome variable (issue #11; thanks @JoseAntonioOrtega).

                        Changes in version 0.2.3                        

  - Internal fix calc_asfr() to address tmerge() error: idname option
    must be a valid variable name.

                        Changes in version 0.2.2                        

  - Patch to jacknife() function for case where person-years appear in
    only one cluster, resulting in zero denominator for some jacknife
    replicates and NaN variance estimate.

                        Changes in version 0.2.1                        

  - Implement separate jackknife() function including stratified
    jackknife.
  - Add option varmethod = "none" to calculate point estimates but no
    variance calculations. Especially useful if you're just using
    calc_asfr(..., counts = TRUE) to get weighted births and PYs.

                        Changes in version 0.2.0                        

  - Added a NEWS.md file to track changes to the package.