lolcat disrespects tabs purpose

[gulhe]

It does force replace them with ' ' (8 spaces)
And while it is generally fine with me as I don't care too much about it in some specific cases it was a problem.

I have some workaround
like

expand <(echo -e "<string with tabs in it>") | lolcat

instead of

echo -e "<string with tabs in it>" | lolcat

But if lolcat could handle that natively that would be great (I'll try to do a PR sometime but I'm no ruby expert)