On the one hand selling istead of giving it away for donations will mean that I could spend more time on it but on the other a lot of people already donated (keep in mind that it's maintained by Targhan and refunds to all people that donated won't be easy, paypal will charge again for sending money, etc) and some of them might also don't like that money was kept for about one year, as they could spend them on something else. So, there're some pros and some contras of changing license scheme. And NOTHING was decided yet.