Add Golden Mean / fibonnaci curve composition guide#109

This would nicely round out your current guide selection.

Agreed, and there is room to add it to the grid selection view, so should be simple to implement.

Agreed 👍 We plan to add it in the future.

👏 Great news!

Hey @Florian , just wanted to say you`re doing a Stella job on the development of this app, could you also add a Phi Grid, Golden Triangle, Vanishing point, framing depth, landscape depth, leading lines and any other composition grids/guides as found on the wise camera app on ios which might be useful.