Burner can now also fire diagonaly!
Launcher can now attack any immediately adjacent tile.
Reworked BoardUtils.GetTransformedBoardPoint() to step through one tile at a time, checking bounds, to allow for diagonal attacks to be correcty clamped to the board.
added Tile.GetPivotDirection() to get a a cardinal direction from a tile to an adjacent tile
updated UnitAttackAreaLine to work with diagonal attacks
added UnitLoopAttackRange
deleted UnitLineAttackRange as its not used (never was)