[Bug] Extension method highlighting not working properly in manifold-collections about manifold-ij

[rsmckinney]

@CC007 The manifold IJ plugin itself includes core components from manifold, such as the manifold-ext jar. Without getting too deep into the plugin's innards, when developing manifold their are two copies of manifold core types: the .class files included with the manifold jars and the source files in the project. Basically, because manifold itself doesn't depend on jar files of itself, the plugin is unaware of manifold usage.

This is a solvable problem, but one I haven't spent much time resolving as of yet.