Rearrange folders
Install NUnit and Should
Initialize Game
Place Move
Code formatting
Refator: State use IEnumerable instead of arrays

In order to be compatible with Linq
Create Possition class
Use possition class
Possition Occupied
Make consistent use of position class
Fix typo
Add OnPositionOccupied method to Game
Add extension for null safe event invocation
Add test PlaceManyMoves
Pass PlaceManyMoves
Horizontal Win
Refactor PossitionOccupied test
Add VerticalWin test
State holds Cells instead of symbols
MapPositions use Cells