Restructure tasks a bit:
- tasks/tests -- 'basic problems, we've verified numerical solutions'
- tasks/demos -- 'just pictures'
- tasks/objects -- 'objects with real parameters'
Update VTK snapshots - remove unnecessary data, add C-T-S-D
Implement CharactCache
Ugly workaround to get better dispatcher results
Dispatcher should base decision on number of nodes, not on AABB volume
Task for one stringer with epoxy layers.