hpack 0.34.4

Only display out-of-date packages.

9 Reverse deps	Accepted versions
axel	-any
cabal2nix	>=0.29.6
hpack-dhall	>=0.31.0
hsmodetweaks	>=0.25
nix-tools	-any
pantry	>=0.31.2
pantry-tmp	>=0.31.2 && <0.32
servant-serf	>=0.34.2
stack2cabal	<=0.34.3