I’m sure I donated back in version 0.1 or 0.2, maybe a year ago, but looking now it doesn’t seem to show me as being a registered user, so perhaps I was wrong.

I’m pretty sure it still falls under the definition of ‘donationware’, though?

Donationware is a licensing model that supplies fully operational unrestricted software to the user and requests an optional donation be paid to the programmer or a third-party beneficiary (usually a non-profit).[1] The amount of the donation may also be stipulated by the author, or it may be left to the discretion of the user, based on individual perceptions of the software’s value. Since donationware comes fully operational (i.e. not crippleware/freemium) when payment is optional, it is a type of freeware.