small post-production changes
- reworked images so that they are a more managable size
- tweaked refs files to incude publication information for cscw paper
- [DH] figures/barnstar_alone.png
- [DH] figures/frontpage_modified-topremix.jpg
- [DH] figures/frontpage_modified-topremix.png
- [DH] figures/frontpage_modified.jpg
- [DH] figures/lilypad.jpg
- [DH] figures/lilypad.png
- [DH] figures/scratch_screenshot_default.jpg
- [DH] figures/scratch_screenshot_default.png
- [DH] figures/wp_citations_by_year.jpg