The conda package is now split up into
-libimagefusion, includes runtime and developement content like headers
-imagefusion-utils, depends on libimagefusion
-imagefusion-python, depends on libimagefusion
-imagefusion, meta-package depends on all three packages above

This allows to install only a part of the imagefusion framework, but
makes it still easy to install all of them using the meta-package. In
fact, the installation instructions in the README.md have not changed.