* Increment version number to 0.4.3

* chore: add cran comments

* Fix indents and invisible characters (GitHub Actions)

* Re-build README.Rmd (GitHub Actions)

* Re-build index.Rmd (GitHub Actions)

* chore: urlchecker::url_update()

* chore: align and register s3 print methods

* tests: Update and fix tests

* docs: update link in thanks

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Co-authored-by: gadenbuie <gadenbuie@users.noreply.github.com>

Avoids note for long argument length and allows for more consistent checking if supplied arguments are default values

* fix style of ggplot2, xaringan pkg refs
* fix name of theme_xaringan_restore_defaults()

not working because {colorspace} doesn't force evaluation of
input arguments to scale_color_xxx_xxx() before passing down
to sequential_hcl()

...and renamed from get_xaringanthemer_value()

* e.g. style_duo() <- duo()
* style_xaringan <- write_xaringan_theme()
* style_extra_css <- write_extra_css()
* added NEWS entry
* updated docs and /docs

Also fixed an issue with `outfile` argument not getting passed back to write_xaringan_theme!

using inst/scripts/generate_theme_functions.R

- write_xaringan_theme works
- mono_* works