v3.1

Here's pyinfra 3.1 - a release primarily driven by contributors new and old - a HUGE THANK YOU to all of you who dedicate time to work on pushing pyinfra forward. New stuff:

• Add zfs operations (dataset, snapshot, volume, filesystem) facts (Pools, Datasets, Filesystems, Snapshots, Volumes) (@taliaferro)
• Add flatpak operations (packages) and facts (FlatpakPackage, FlatpakPackages) (@JustScreaMy)
• Add jinja_env_kwargs argument to files.template operation (@DonDebonair)
• Add using dictionaries as @terraform output (map from group -> hosts)
• Add default @terraform output key - pyinfra_inventory.value, promote connector to beta
• Add support for multiple keys in each server.authorized_keys file (@matthijskooijman)
• Add print all dependency versions with --support flag (@kytta)

Fixes:

• Fix when ssh_hostname is set as override data, don't do inventory hostname check
• Fix apt.AptSources parsing special characters (@CondensedTea)
• Fix server.reboot connection detection (@bauen1 + @lemmi)
• Fix systemd flagging of sockets running (@bauen1)
• Fix mysql dump quoting (@simonhammes)
• Fix tilde expansion in files facts (@simonhammes)
• Fix host lookup check with SSH alias config (@simonhammes)
• Fix crontab comparison (@andrew-d)

Docs/internal tweaks:

• Improve operations documentation (@bauen1)
• Default to local machine if user_name set in systecmt (@bauen1)
• Improve efficiency of Docker operations (@apecnascimento)
• Shallow copy host.data data to mutation