Conary 2.0.40 is a maintenance release.

• keepRequired now recognizes that local troves may have had files removed, preventing file conflicts with incoming troves
• Fixed formatting error in cvc explain that caused policy actions to be listed twice. (CNY-3107)
• Conary ignores configuration file errors for certain local operations including conary query, rblist, and showcs. (CNY-3111)
• Python flags on a Requires dep now use exactly the flags on the corresponding Provides, rather than being trimmed to match flags on python:runtime's Requires deps. (CNY-3030)
• Disallow characters '"\\()[] in labels

• Added getLabelsForHost call, and bumped server protocol to 66. (CNY-2771)
• Added getFilesFromTrove call, and bumped server protocol to 67. (CNY-3100)
• Repositories now check the database to see which files already exist instead of looking in the filesystem for a noticeable speedup in commit time for systems with NFS based data stores.
• In a GroupRecipe, r.remove now takes a use flag to determine if a trove should be removed. This matches the behavior of r.add*. (CNY-3115)
• Added types to allow creation of sockets and named pipes via conaryclient/newtrove.py code paths
• The "migrate" command now accepts the "--from-file" option (CNY-3114)
• Standalone and apache servers now pull in REST api from the crest project if the code is available. Note that restlib and xobj are required for the crest implementation, and that the "baseUri" must be specified in the server config file (it's normally /conary).
• Repository commits now take advantage of knowing which parts of the commit have not changed since the old version for better performance
• The internal OpenPGP implementation can now change passphrases on secret keys. (CNY-3123)