[CI] Remove tmate setup in pkgdown GitHub Action

Prepare CRAN release v0.16.1 (#568)

Increment version number to 0.16.0

Increment version number to 0.15.3 and update CRAN comments

Increment version number to 0.15.2

[CRAN] Release v0.15.1

[CRAN] Fix CRAN checks

[CRAN] Fix checks

[fix] Remove deprecated units functions from NAMESPACE

v0.14.0 RC

Increment version number
[CRAN] Check revdep
[CRAN] Update CRAN comments
[docs] Fix typos