Small cleanup of CCFollow:
Small cleanup of CCFollow:

* renaming of BoundarySet to UsingBoundary, which is made internal (only initialised in ctr)
* BoundaryFullCovered is now internal (only initialised in ctr)

zmaruo/CocosSharp,hig-ag/CocosSharp,haithemaraissia/CocosSharp,MSylvia/CocosSharp,mono/CocosSharp,netonjm/CocosSharp,TukekeSoft/CocosSharp,hig-ag/CocosSharp,TukekeSoft/CocosSharp,MSylvia/CocosSharp,haithemaraissia/CocosSharp,mono/CocosSharp,netonjm/CocosSharp,zmaruo/CocosSharp