Merge pre-release into main (pharmaverse#352)

* Remove unnecessary files

* vBump for internal release

* Update NEWS.md

Merge pre-release into main (pharmaverse#352)

* Remove unnecessary files

* vBump for internal release

* Update NEWS.md

Temporarily remove check for empty string level of split var. dev vbump

Temporarily remove check for empty string level of split var. dev vbump

CRAN release 0.5.1

child_labels="hidden" no longer affects tbl structure (pharmaverse#314)…

…. dev vbump

v0.5.0 CRAN release

Bookkeeping non-CRAN release of 0.4.1

Bookkeeping non-CRAN release of 0.4.1

CRAN release v0.4.0