Use the shiny new Sholl Analysis version

This is one of the many steps in the direction of reproducible Fiji
builds (i.e. having only defined release versions as dependencies).

It relies on https://github.com/tferr/ASA/pull/2 being merged, first.
Once merged, it will address https://github.com/fiji/fiji/issues/66.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>