Feature request: Add setting to preserve the terminal codes.

[antoine-sachet]

At the moment, terminal codes are filtered out by _strip_terminal_codes in outputmon.py.

It would be great if there was a setting to turn that off.

With the right syntax selected, I think sublime text can actually make sense of these to color the output. See the plugin sublimeANSI or the plugin ANSIescape.

This would probably solve #33