bismuth 0.0.4

A 3D game world represented as cubes in an oct-tree that can be manipulated in real time.
Documentation 
![Bismuth](https://raw.githubusercontent.com/olson-sean-k/bismuth/master/doc/bismuth.png)

**Bismuth** is a game library that represents a 3D world as an oct-tree that can
be manipulated in real time.

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## Oct-Tree Structure

An oct-tree is used for spatial partitioning and storing cubic geometry that
represents the game world. Each leaf subdivision is a cube, but its geometry can
be modified by contracting the edges along each axis. This can be used to
approximate curves and other more interesting shapes.

![Screenshot](https://raw.githubusercontent.com/olson-sean-k/bismuth/master/doc/screenshot.png)