Dive into the 2D/3D world (remains of QUIA...)
fixed initialisation. Code runs well (and faster?) the first time, but stalls the second (NaN when computing average)
Updated to Icy kernel 1.4.0.0
* optimise average intensity update (cache Graphics)
* fix x,y detection position
* Use a single Executor service for now
* Synchronise resources where necessary
* Make sure all threads finish before moving on
Just use Runnables
Various optimisations (seem to break Graphics2D.fill again...)
Revert "Various optimisations (seem to break Graphics2D.fill again...)"

This reverts commit 43318c78ce7e1380f05cd837ef95f91b4678f2f1.
Revert "Revert "Various optimisations (seem to break Graphics2D.fill again...)""

This reverts commit 2f3c56097bd9101e3fcd80997ecc0ec63db41b47.
Fixed the Graphics.fill issue (still don't understand it though...)
The Graphics trick really doesn't wanna work :/
* Return of the sensitivity parameter
* Adjusted mean computation (WARNING: conflicts with 2d-3d branch!!!)
* Trying to save memory a bit
* Set the correct Z from the GUI
* Don't always push to the track manager
Filter the data for gradient computation (*much* more efficient, obviously)
Overlay: Fixed null pointer when dealing with non-2D viewers
* compute second order gradient
* internal forces were *not* resolution independent (yet!!)
* remove some useless output
Sliding window: store every other value, to prevent most oscillation effects
synchronize region means hashmap to avoid null entries
minor cleaning
new Mesh3D (finally getting serious!)