This release fixes a long-standing issue (going way back to the first JPluck release more than 3 years ago) with the conversion of 2bpp and 4bpp images. I bet no-one actually uses these bit depths, but there you go.
I also upgraded the HTTP client library to the latest release v3.0.
Download from SourceForge
It took me an hour to figure out how to actually build the damn thing! It's been that long.