Pr/refactor b2 time of impact and b2 make separation function to use 'in' modifier#77

ikpil merged 2 commits intomainikpil/Box2D.NET:mainfrom

pr/refactor--b2TimeOfImpact-and-b2MakeSeparationFunction-to-use-'in'-modifierikpil/Box2D.NET:pr/refactor--b2TimeOfImpact-and-b2MakeSeparationFunction-to-use-'in'-modifierCopy head branch name to clipboard