v1.1.0

• New repo_status() function to query the status and response time
  of CRAN-like repositories.

• New bioc_version() and bioc_version_map() functions to query
  Bioconductor repositories.

• pkgcache now does not fail if some repositories do not provide
  some package types.

• New current_r_platform(), default_cran_mirror() and
  default_platforms() functions.

• pkgcache now works for R 4.0.x macOS binaries.