Okay, so this is where the prototype is at so far: I have some basic plant 'painting' functionality, using a raycasted sphere cursor and a system of 'life cells' which contain plant life. So far, players can use the cursor to grow life and take away life. They can also resize the cursor. Currently,I've implemented one 'vertical set' of plant life -- one linear progression from grass, to flower, to bush, to sapling, to tree. Very soon, I hope to add in more 'growth tracks,' more sets of plant life with the same number of species as I have now. In the coming commits, I'll be working on a way to determine which of these sets is grown, given a single input.  /(Note: In order to be allowed to make an empty commit, I made a meaningless, token change to Grid.png/)
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