CRAN Release v1.30.5

CHANGES IN VERSION 1.30.5

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NEW FEATURES

• Allow users to specify checkBuilt when invoking valid() or
  install(). Set default FALSE.

MINOR CHANGES

• Allow use of BiocInstaller for R < 3.5, pointing to biocLite()
  when appropriate.
• Improve performance of version checking (#42 @HenrikBengtsson).
• Document off-line installation best practices.
• Warn about out-of-date packages on load (in addition to on
  attach) (#29)