Hexagon Grid Generator Hack 0.4.3 + Redeem Codes

- 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