Compile for gimp 3.0

[gfl43r9nd]

Can this be compiled for the recently released gimp 3.0 version?

[bbbbbr]

Thanks for checking. If it doesn't work already (looks like they may not) then it's probably not trivial. There are likely a substantial number of deprecated API calls that need to be changed, and perhaps changes of the surrounding code to accommodate that.

I supposed it will have to happen at some point, but it's going to be lower on my priorities (unless someone PRs a well done update to accomplish that).