- modified clicklabel to provide a mouse listener for hover events - modified clicklabel.i to make new methods available for python - added LabelListener to pychan wrapper, as well as two new methods to Label class to set enter / exit callbacks NOTE:

This demonstrates the use of PNG_USER_CONFIG and pngusr.h

To build a minimal write-only encoder, run
    gather.sh  # to collect needed files from pngminus, libpng, and zlib
    make -f makefile.std