Use path based SHELL in Makefiles. It was suggested that this is a better solution for make for cases when there is no /usr/bin/env. See: https://github.com/purpleidea/mgmt/pull/694#discussion_r1015596204
Encrypt name of IRC channel to workaround forks spamming us with their testing messages. Docs: https://docs.travis-ci.com/user/environment-variables/#Defining-encrypted-variables-in-.travis.yml