Adds `chrome-download-extension` to get .crx from ID
Moves `alive` into autoloaded function
Adds `alive!` function: looped `alive` + DNS check
Adds `alias-directory` function

Interface to `namedirs` functionality.  Makes it easy to add new directory alia.
Adds `/opt/djb/bin` to standard PATH checks
Uses Verman for Erlang, bumps to 17.0
Fixes `lslvm` for running as non-root