non-echoing input? (password input)

[SaeedB]

**EDIT:** Discovered my `getPass()` adds backspace characters too; here's one 
workaround for that:
    
    
    proc getPassword(prompt = "Secret: "): string =
      stdout.write(prompt)
      const backspace_character = char(127)   # ASCII code
      
      while result == "" or result[^1] notin ['\r', '\n']:
        let entered_char = getch()
        # Cant actually implement backspace behaviour (remove char already 
printed to stdout), but can at least not add/print for its character
        if entered_char != backspace_character:
          result.add(entered_char)
          stdout.write("*")
      
      stdout.write("\n")
      return result.strip()
    
    
    Run