Add "gti fetch" command with someone catching up to a rolling GTI

[BenBE]

Hey, I just wanted to say everything works fantastically. Yet I feel this tool might need some enhancement on command coverage.

Not sure why I even opened this issue. But I think this might be related to the gti fetch command which is lacking some custom animation.

I'm using gti on

• [ ] HP-UX running on a 68k
• [ ] NetBSD, with output piped to a slice of toast
• [ ] an unreleased beta version of Windows NT 4.0 with a cmd.exe replacement from ReactOS
• [X] some out-of-the-box default Linux

and it

• [ ] set fire to my line printer
• [X] hard-linked /bin/emacs to/bin/vi (which is a totally valid replacement IMHO)
• [ ] crashes when run backwards in my home-grown CPU emulator

It would be even better if gti fetch showed an animation where someone is running behind the GTI. If the --all flag is given, he might even fetch it at the end. Without the flag the figure might fetch the GTI at random.

[rwos]

So this should be relatively easy to implement, the only problem is doing the actual animation, really... Patches welcome ;)