Planter Fill Alert

This mod plays a sound alert while you are using a planter / seeder:
- Alert at 50%, 30% and 10% of the tank remaining.
- Each level has more beeps: 1 beep (50%), 2 beeps (30%), 3 beeps (10%).
- SEED has a high-pitched beep.
- FERTILIZER has a low-pitched beep.
- Works with implements attached to the tractor you are driving.
- Multiplayer compatible (the sound plays only for the driver).

Levels can be changed in PlanterFillAlert.lua.