v0.7.0 - The Database Release

• Very long experiments: In previous versions, memory kept growing until you eventually got an error (usually around 100 to 120 Megaticks). Now historical data is saved to a database rather than memory - so you can just keep going. Let's see whether creatures keep evolving in extremely long experiments.
• History database: As a bonus, you can now examine the history of an experiment with any SQLite client.