[RFC] Give unique prompt symbol (>>>) to Nim about inim HOT 2 CLOSED

• v0.3.1 changed prompt symbol to inim>

from inim.

inim> echo 1+1

TODO:

• we could have good defaults, and furthermore, could be customizable by user, via a proc that gets called each time prompt is displayed (just as zsh is).
  So allow user to pass an arbitrary lambda:

# could be (re-)defined at runtime via, say, an import
# defines proc prompt():string = ...
import my_shell_config
# calls prompt() each time the prompt is drawn

=> user can make prompt colored, add a timestamp, duration of last command, number of such prompts etc

from inim.