Backports the automatic mixed rocket behavior introduced in Factorio 2.1 to Factorio 2.0 Space Age.

When Mixed mode is enabled on a Rocket Silo, the mod collects requests from the target Space Platform, combines multiple requested items into a single rocket payload, requests them through the normal logistic network, and launches the rocket automatically.

Features:
- Mixed-item rocket payloads
- Uses the vanilla logistic network and logistic bots
- Automatic Space Platform targeting
- Automatic launch
- Per-silo Vanilla / Mixed toggle
- No external mod dependencies
- No extra chests, inserters, belts or circuit builds required

Switch back to Vanilla 2.0 mode at any time.

This is an early release. Bug reports and feedback are welcome.