3.4.2

Enhancements:

• allow trimming of skipped metadata in rendering to be optional (for sake of
  conda-forge rendering readme's on platforms that are skipped) #2680
• rename the build prefix prior to the test phase. This will precipitate
  failures when packages embed paths to the build prefix, which conda does not
  replace at install time. Fixing these instances is specific enough to packages
  that we do not attempt to handle it in conda-build. #2681
• add conda_interface.get_install_version function that facilitates checking if
  a pkg is in an env, and if so, what its version is #2682

Bug fixes:

• use lookaheads in extraction regexes to avoid capturing unwanted text #2679

Contributors:

• @msarahan