Log Message:
(www/R-downlit) Updated 0.4.0 to 0.4.4

# downlit 0.4.4

* Use simpler parsing algorithm for R 4.0, which avoids crash with
  certain UTF-8 characters (#189).

# downlit 0.4.3

* Fix for upcoming R-devel (#169).

# downlit 0.4.2

* `highlight()` no longer errors if a package imputed to have been attached
  isn't installed.

* Correctly link `requireNamespace(MASS)` (#151).

# downlit 0.4.1

## Syntax highlighting

* Supports new base pipe `|>` syntax (#126).

* Every line get its own `<span>` to match pandoc (#122).

* Multi-line tokens (e.g. strings) now get a `<span>` per line (#139).

* Very long strings or other tokens are no longer truncated (@dmurdoch, #128).

## Auto-linkg

* Function calls (in inline and code blocks) will no longer to non-function
  topics (#135).

* Re-exports detection no longer relies on name of `.Rd` file (#134).

* Link to correct topic with `::()` and `utils::help()` (@IndrajeetPatil, #131).

* Generate correct link for Bioconductor vignettes (@zeehio, #145)