If you use the terminal at all, get them!
That would be one of the coolest news in weeks!
For difftastic, there is difftastic package in MELPA, see also https://github.com/pkryger/difftastic.el for instructions.
`env GIT_EXTERNAL_DIFF=difft git log -p --ext-diff`
Hope it helps :)
difft = -c diff.external=difft diff
I may add a similar alias for delta
If you use the terminal at all, get them!