Part of #1386

Depends on r-lib/rlang@9ed2c62

Closes r-lib/rlang#1386

# cli 3.4.1

* cli has better error messages now.

* New `format_inline()` argument: `collapse`, to collapse multi-line output,
  potentially because of `\f` characters.

# cli 3.4.0

* New experimental styles to create ANSI hyperlinks in RStudio and
  terminals that support them. See `?cli::links` for details (#513).

* Expressions that start and end with a `{}` substitution are now styled
  correctly. E.g. `{.code {var1} + {var2}}` (#517).

* New `{.obj_type_friendly}` inline style to format the type of an R object
  in a user friendly way (#463).

* Improved vector collapsing behavior. cli now shows both the beginning
  and end of the collapsed vector, by default (#419).

* Nested `cli()` calls work now (#497).

* Return values now work as they should within `cli()` calls (#496).

* Style attributes with underscores have new names with dashes instead:
  `vec_sep`, `vec_last`, `vec_trunc`, `string-quote`. The old names still
  work, but the new ones take precedence (#483).

* cli now does not crash at the end of the R session on Arm Windows
  (#494; @kevinushey)

* Vectors are truncated at 20 elements now by default, instead of 100 (#430).

* 20 new spinners from the awesome
  [cli-spinners](https://github.com/sindresorhus/cli-spinners) package,
  and from @HenrikBengtsson in #469.
  Run this to demo them, some need UTF-8 and emoji support:

  ```r
  new <- c("dots13", "dots8Bit", "sand", "material", "weather", "christmas",
    "grenade", "point", "layer", "betaWave", "fingerDance", "fistBump",
    "soccerHeader", "mindblown", "speaker", "orangePulse", "bluePulse",
    "orangeBluePulse", "timeTravel", "aesthetic", "growVeriticalDotsLR",
    "growVeriticalDotsRL", "growVeriticalDotsLL", "growVeriticalDotsRR")
  demo_spinners(new)
  ```

* cli exit handlers are now compatible again with the withr package (#437).

* cli functions now keep trailing `\f` characters as newlines.
  They also keep multiple consecutive `\f` as multiple newlinees (#491).

* `{}` substitutions within inline styles are now formatted correctly.
  E.g. `{.code download({url})}` will not add backticks to `url`, and
  `{.val pre-{x}-post}` will format the whole value instead of `x`.
  (#422, #474).

* cli now replaces newline characters within `{.class ... }` inline styles
  with spaces. If the `cli.warn_inline_newlines` option is set to TRUE, then
  it also throws a warning. (#417).

* `code_highlight` now falls back to the default theme (instead of no theme)
  for unknown RStudio themes (#482, @rossellhayes).

* `cli_abort()` now supplies `.frame` to `abort()`. This fixes an
  issue with the `.internal = TRUE` argument (r-lib/rlang#1386).

* cli now does a better job at detecting the RStudio build pane, job pane
  and render pane, and their capabilities w.r.t. ANSI colors and hyperlinks.
  Note that this requires a daily build of RStudio (#465).

* New functions for ANSI strings: `ansi_grep()`, `ansi_grepl()`,
  `ansi_nzchar()`. They work like the corresponding base R functions, but
  handle ANSI markup.

* `style_hyperlink()` (really) no longer breaks if the env variable `VTE_VERSION`
  is of the form `\d{4}`, i.e., 4 consecutive numbers (#441, @MichaelChirico)

* `cli_dl()` and its corresponding `cli_li()` can now style the labels.

* The behavior cli's inline styling expressions is now more predictable.
  cli does not try to evaluate a styled string as an R expression any more.
  E.g. the meaning of `"{.emph +1}"` is now always the "+1", with style
  `.emph`, even if an `.emph` variable is available and the `.emph + 1`
  expression can be evaluated.

* Functions that apply bright background colors (e.g. `bg_br_yellow()`) now
  close themselves. They no longer format text after the end of the function
  (#484, @rossellhayes).