Bump Stitching to its first, like, ever, release version

Thanks to Stephan Preibisch, Mark Hiner and Curtis Rueden, this project
is one of the most lively Fiji projects. These gentlepeople agreed to
let me release the first official version (as per Maven). A great day
for Fiji!

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>