Bug Fixes: reset with exposed facts, colission detection in CanonBallCalculator
Known bugs: cannot guarantee closed set for exposed Facts
Added GlobalFactDictionary for ease of use

Please use estqblished code(conventions)

Removed unnecessary debug statements.

test

+ completed IJSONsavable<> & integration into Stage/Fact/Organizer-classes\n+ No error if no savegame found\n+ some bug fixes (create/load/save/edit)

+New Polymorphismus for JSON serialization for Solution-/FactOrganizer and Fact; +added using keyword for UnityWebRequest

+Doygen for most of Assets/Scripts/InteractionEngine/FactHandling/* and Gadget.cs +Bug fixes for saving/loading fuctionalities of Stages

+MainMenue: Create new Stage files via UI +StageStatic: differentiate between developing and playing

+Added Scenes: MainMenue, LoadingScreen +Stage: Save-Load fuctionality +Sorted Prefabs and Scripts Folder

+FactOrganizer: hid FactDict +Facts: re-renamed URI to Id, enabled persistend, generated and compact LabelNamingSpace

+Restart: reenabled RestartLevelButton +Level: reenabled Level-completion +FactOrganizer: scetch for dynamic LevelGoals, with-> +FactComparer +ShinyThings: TODO: multiple highlited facts at once

misc: just PointerGadeget snaps on tree-roof, used 'IsApproximatelyParallel' for RayFact Equivalency

+added Lot&Pendulum-Tool +Using Math3d lib for VectorCalculus +Changed Fact managment (unstable\!) +Misc refactoring