Clone using
git clone --recurse-submodules https://github.com/Carlyle-Foster/Image-Tool.git
To build the project simply run
make
if you're on windows you may have to install GNU make first.
Note that the makefile requires CMake to automatically build raylib, see below.
If you don't have/want-to-use cmake open the makefile and replace the instructions for building libraylib.a with your preffered method, just make sure that the resulting libraylib.a file still ends up in Build/Cache where it's expected.
a simple tool i made to help me embed metadata in the alpha channel of a PNG, maybe it can do more than that