improved mode_drip

[ewoudwijma]

• Support palettes
• One drop after the other
• Not fall random but fall if swelled (swell has random component)
• Add Swelling slider (not combined with gravity)

[blazoncek]

Let's ask @Aircoookie what's his opinion.

[blazoncek]

Tested this and must say that watering does not look as original to my eye. It swells too fast. If you set Fall rate slider to 0 no drops fall.

[ewoudwijma]

swelling should be the same but I will check. Will also check fall rate slider

[blazoncek]

Not going merge this.