* make it boot without biome lib
* make luacheck semi sane
* make fast growth saplings work
* make fast saplings respect nodes there growing on
* make regualr saplings work
* fix some luacheck warnings
* add github actions for luacheck
* bump luacheck line limit, as to gracefully handle long tree rules
* switch over to inline luacheck length rules
* fix screenshot warning
* make tree generation work
* add settings from last night
* comment out new biome lib nonsense added
* tune spawning to be better
* turn down fallback ratio
* translate new abm patch to not use biome lib
* add ethereal since its still behaving badly :(
The previous screenshot showed only a few of the available trees.
The new one shows all of them (except acacia, which is disabled,
and in the default game anyway, and beech).
As finding a suitable spot where even a significant proportion of
trees is only visible at all is near impossible, this scene was
crafted, and instructions and a script for recreating it are included.
