fix(add): Limit 'Features as of vX.Y.Z' to when relevant

fix(add): Limit 'Features as of vX.Y.Z' to when relevant

This will only show the messaeg if we didn't already show a version req
with full precision specified ... mostly.  We'll also skip it if its a
local or git dependency but we never show the version in those cases
because it doesn't matter.

The `precise_version` logic came from cargo-upgrade.