packrat 0.9.3

• Update vendored renv with support for additional Linux distributions when
  normalizing and transforming Posit Package Manager URLs. (#725)
• Improve package installation in a multi-process environment. Do less work
  when a target package is in the cache and write package DESCRIPTION
  updates to temporary files before persisting. (#720)
• When determining the package source, consider biocViews before
  Repository. Recent Bioconductor package DESCRIPTION files include the
  Repository field, which caused Packrat to believe that those packages
  originated from a CRAN-like repository, not Bioconductor. (#729)
• Attempt package downloads from multiple package repository archive layouts.
  Paths used by CRAN-like, Nexus, and older Artifactory repositories are
  supported. (#583)
• Attempt URL downloads fewer times before giving up.
• Rename files downloaded from a package repository when the name is not
  name_1.2.3.tar.gz, as can happen with r-universe. (#731)