[$] Digging into Julia's package system

We recently looked atsome of the changes and new features arriving with the upcomingversion 1.7 release of the Julia programming language.The package system provided by the language makes it easier toexplore new language versions, while still preserving multiple versions of various parts of the ecosystem. This flexible systemtakes care of dependency management, both for writing exploratory code in the REPL and fordeveloping projects or libraries.