v7 release, and texture customization

Cowgirls are a lot less likely wander off from the goddess. I tweaked their ai to prefer walking towards the goddess if they are far away.

A few patches of ore veins spawn close to the goddess.

Increased some stack sizes, as sometimes the stack sizes were a little oppressive.

Feeder can now feed player

The game now comes with the texture pages as PNGs in the zip file, any changes done to these files will appear in the game. This is to allow people to customize the graphics. The player, cowgirls, and hardmode goddess use shaders to replace the colours of the sprites. To make edits compatible with this system, make sure to use the same colour palette as the unedited sprites. Different colours will still work, but the shader won't replace them. Also mind where the faces of the goddesses will be drawn, as this isn't something that can be changed with a texture edit.

I am now more or less happy with the game. Any further changes will be bugfixes and mistakes in the recipe book.

Edit: a crash was brought to my attention, retiring a cowgirl would cause the game to crash, and this is fixed in v7.5

Edit 2: fixed crash when taking nuclear reactor as source for inspector panel, v7.6