Cleanups,Project

* Merge TestUtils into Utils.
Cleanup,Tiny
Project

* Remove TestOperations completely.
Tiny
RingScaler,Fix,Tiny
Cleanup,Fix

* Fix wrong method calling.
* More garbage inclusion.
Cleanup,Splash

* Make splash appear only if not open any file.
Cleanup,Tiny
TTDocument,Imp

* Exposing window controllers.
ImageShaper,Cleanup,Tiny
Test,Cleanups
Ring,Imp

* Expose missing method.
Project

* Make Document folder for document-oriented classes.
* Arrangements.
Triangulator,Imp

* Improve call with block collector.
TTVert,Imp

* Temporary solution for polygon set management.
* Method to replace existing polygon with another one.
TTVert,Imp

* Remove replace method, can't get it to work properly.
TTPolygon,Fix

* Fix -faceRemove crash
TTVert,Imp

* Implement -hasCoord to tell if vert can solve its own coord.
TTContext,Fix

* Make context query coord from vert after -hashCoord checking.
Polygon,AP3,API,Imp

* AP3 API changes.
* Improve description.