Change `HexGrid::spacing()` to accept a single scalar and maintain hexagonal grid#72

Merged

abey79 merged 2 commits intoabey79:masterfrom karliss:hex-grid-spacing

Dec 26, 2023

+17-13

Commits on Dec 23, 2023

Fix hex grid spacing.
karliss
committed

Commits on Dec 26, 2023

Fix formatting.
karliss
committed