Hexagon Grid Generator

### v0.4.4 * added periodic cell shading (with distance between shaded cells 1 and 2) * added a configuration boolean for shifting to positive axial coordinates * new alphanumeric coordinate type shows coordinates as letter-number combinations * added the ability to customize the array of grid cells and add/edit their coordinates * added more help text for each grid type, and dynamically removed the Y coordinate for Triangular grids

- fixed drawing center points AND coordinates in the same configuration - UI pass for general menu consistency and clarity - removed confusing "custom" grid type - added button to randomize configuration - fixed one of the BGG geeklist links on the about screen (thanks to BGG user @fiddly_bits)

### v0.4.2 * fixed layout issues when running on macOS * Add option to draw lines between the center points of adjacent cells * added a new preset for lines between cells, minor changes to some existing presets * updated the "about this app" contents a bit ### v0.4.1 * added the option to draw dots in the center of each cell * added center point grid example * added version string in the about screen's navigation title

This version adds the following features: - The ability to pinch/zoom the grid, as well as move it with two-finger drag - A new "tap effect" to add a stone to the grid - A new "drag effect" to move existing cell contents around