tidypolars 0.12.0

tidypolars requires polars >= 0.21.0.

Breaking changes

• summarize() now drops the last group of the output by default (for
  consistency with dplyr). Previously it kept the same groups as in the input
  data (#149).

New features

• Add support for argument .groups in summarize(). Value "rowwise" is not
  supported for now (#149).

• Added support for dplyr::lead(). In dplyr::lead() and dplyr::lag(), the
  arguments default and order_by are now supported (#151).