Log Message:
(devel/R-evaluate) Update 0.19 to 0.21

Version 0.21
================================================================================

- `evaluate()` gains `log_echo` and `log_warning` arguments. When set to `TRUE`
  these cause code and warnings (respectively) to be immediately emitted to
  `stderr()`. This is useful for logging in unattended environments (#118).

- Improved the error message when users accidentally called
  `closeAllConnections()` (thanks, @guslipkin,
  quarto-dev/quarto-cli#5214).

Version 0.20
================================================================================

- The arguments `keep_message` and `keep_warning` of `evaluate()` can
  take the value `NA` now, which means `evaluate()` will not capture
  the messages and they will be sent to the console. This is
  equivalent to the `FALSE` value before v0.19 (thanks, @gadenbuie,
  https://github.com/yihui/yihui.org/discussions/1458).