Use bioluminescence option

Also fixes the "'light_source' value exceeds maximum" warning

Add heart of the tree

And improved behavior of minetest.place_schematic()

Fix failure of different tree varieties to appear.

Works around how place_schematic() never invalidates its cache - this meant only the same kind of tree could be encountered until the server was restarted.

add tree screenshot. Glowing sakura tree at night

CRLF -> LF

Minetest's parsing of settingtypes.txt fails on CRLF if running under linux

Merge branch 'master' of https://github.com/Treer/cloudlands

Add more silts

Prevent ponds from overflowing in biomes where the node_top node is f…

…loodable

fix limit_biome_altitude setting

Fix rarity of reefs

Use a probability evaluation that isn't spatially terrible