Better comment, input

[boyska]

Some defects:

1. if I can enter a comment, why should I press ENTER twice (the first time just to stop the clock, the second for the comment)
2. why should comments be oneliners?
3. using EOF (instead of enter) to stop the watch seems much more reasonable (and unix-style) to me.

A proposal:

• when you run ctt track myproj all the text entered will be added as a comment (but only the first line will be used for reports and so on!)
• when the user presses ctrl+d, the clock stops, the comment is saved. hurray!

I realize that, to keep ctt as KISS as possible this may seem too much, and should be handled by a separate tool that wraps ctt. The problem is that it's not so easy to write a wrapper on ctt, so an option to switch the interface will just be simpler to write.