Patch Notes: Meadow grass

A new look for the grass

The grass can now be a meadow made from new hand-drawn sprites: tall and short green tufts, flowering tufts, dry tufts and bushes, mixed across the land.
Every tuft and bush grows to its own size. Whole patches run taller or shorter, so the land no longer looks the same everywhere.
Flowers gather in lush patches and dry grass in poor ones. Bushes turn up here and there, from shin-high to shoulder-high.
The meadow doesn't turn to face you. Each tuft and bush stands on crossed cards like the low-poly trees, so you see it from every side as you walk round it, and a low sun lights one face more than the other.
The meadow follows the ground: its greens take the colour of the grass they grow on, so it fits every climate and season (flowers keep their own colours), and on a hillside each tuft stands on the slope instead of hanging over it.
The meadow sways in the wind the way the trees do. Bushes are stiffer than grass, as the world's bushes are.
The meadow does about the same vertex work as the old pixel tufts.

Crossing into a new part of the map no longer makes all the grass jump to a new pose in the wind. The trees no longer jump there either.
Pixel-style grass tufts no longer swap to different pictures when you cross into a new part of the map.

Grass is now off by default. Turn it on under Settings › Grass with Full, Half or Quarter. If you had it on Full before, it is off after this update until you turn it back on; Half and Quarter are kept.
Grass › Style defaults to Meadow. Pixel (the old tufts) and Smooth are still there.
Wind › Trees sway is now just Sway: it moves the grass as well as the trees, and turning it off holds both still.

MEADOW1 + AUDIT MEADOW1: Meadow grass on low-poly crossed cards, grass off by default, swaying with the trees by @Lattymoy in #651

Full Changelog: app-v0.1.6650...app-v0.1.6656