Supports hex grids (pointy and flat), rect grids, and diamond grids
Supports grids in different shapes.
Supports contents of any data type.
Supports fast lookup of points (whether a point is inside a grid or not).
Supports access through integer vectors.
Vectors support addition, subtraction, scaling, matrix multiplication, and dot product.
Supports iterators for grids – easily loop through all the points in a grid.
Support easy mapping to screen coordinates (with functions to translate and scale the grid, and align the grid to the edges, corners or center of a rectangle).
