v0.4.0

• Added Substitution tiling grid
• Added experimental Godot support
• Added UPM Published package
• Add Format methods to ICellType
• Fix hang in PeriodicPlanarMeshGrid
• Fix planar prism modifier layer scaling.
• Fix vertex fanning.
• Fix TransformModifier.FindCell.
• Fixed BijectModifier.TryMoveByOffset
• Fixed raycast on some bounded grids
• Fixed orientation of Connections
• Improve precision of some floating point calculations, particularly for Townscaper grid
• Fix FromMatrix to ignore (uniform) scaling
• Fix issues with 360 degree rotation