Changes in version 0.2.3 (2025-01-18)                  

  - Fixes for covar and correl implementations.

                 Changes in version 0.2.2 (2024-07-29)                  

  - Performance improvements for data.frame methods.
  - Update ggplot2 tests (r-quantities/units#367).

                 Changes in version 0.2.1 (2023-04-26)                  

  - Fix a couple of tests (r-quantities/units#324).

                 Changes in version 0.2.0 (2022-12-05)                  

  - Add compatibility between errors::geom_errors
    (r-quantities/errors#52) and units::scale_[x|y]_units
    (r-quantities/units#294) (#13).
  - Fix warning in as.list.quantities.
  - Add plotting examples to introductory vignette.
  - Add support for errors with units (#14). For objects of class
    quantities or units, the errors() method now returns a units object
    that matches the units of x. Methods errors<-() and set_errors()
    assume that the provided uncertainty (value) has the same units as x
    (for backwards compatibility). However, it is a best practice to
    provide a value with explicit units. In this way, uncertainty can be
    provided in different (but compatible) units, and it will be
    automatically converted to the units of x (see help("errors",
    "quantities")).
  - Add support for correlations and covariances with units for objects
    of class quantities (as part of #14).
  - Remove some superfluous .quantities methods (as part of #14).
  - Implement methods for duplicated, anyDuplicated and unique (#12).

                 Changes in version 0.1.6 (2021-02-21)                  

  - Fix compatibility with units 0.7-0.

                 Changes in version 0.1.5 (2020-06-14)                  

  - Fix compatibility with dplyr 1.0.0 (#8), coordinated with units and
    errors.
  - Fix uncertainty propagation for mixed scaling+offset unit
    conversion, such as Celsius to Fahrenheit (#9).

                 Changes in version 0.1.4 (2020-06-06)                  

  - Add compatibility with upcoming tibble v3.0.0
    (r-quantities/units#225).
  - Implement prettier str print (#5).
  - Implement drop method for data frames.
  - Fix introduction vignette for dplyr >= 1.0.0.

                 Changes in version 0.1.3 (2019-10-31)                  

  - Add CITATION to units and errors in the R Journal.
  - Fix unit simplification in arithmetical operations (#3).

                 Changes in version 0.1.2 (2018-12-05)                  

  - Add delayed S3 registration mechanism for R >= 3.6.0 (a9bb97e).

                 Changes in version 0.1.1 (2018-09-30)                  

  - Initial CRAN release.