New Image Stitcher Plugin

Now allows snaking paths and linear paths starting from different
corners and heading in different directions
Various JEXPlugin and Canceling Updates
JEXPlugin

updated abstract plugin
CrunchFactory Information Message

Indicated when JEX SciJavaPlugins are being loaded.
Add test method to CrunchFactory

Adding a static method to instantiate the new plugins to make sure they
are packaged upon building the project.
Fixed backward stitchin

Row and column indexing was mixed with true x, y locations versus image
pixel x, y locations (fun fun)
Incidental Eclipse classpath changes
Merge branch 'Mary-edits'
Changed .gitignore to exclude .apt_generated

Won't be needed in future with maven