Okey. Yeah, i saw there where some intrest there, but very little it seems. Would be great if you could add support for it.
No special reason, its the only SOIC chip i have on hand from ATtiny series, as a couple of it for a great price a while back.. But then i have to ask, why not? 
I do also have some ATmega328`s but its PDIP, but i guess it gonna have to work for a while.
I did notice somewhere here support for ATtiny26 on 8mhz internal clock, but that one would not work for 61 series?