Giant Trees

1. Updated to Spigot 1.10 and WorldEdit 6.1.3.
2. Giant spruce trees now spawn in the Taiga biome family (Taiga, Cold Taiga, Mega Taiga, etc.), when natural growing is enabled.
3. Giant acacia trees now spawn in the Savanna biome family, when natural growing is enabled.
4. All tree XML config files are now always expanded to the plugin's config folder, unless the file already exists there.

This build was tested against WorldEdit build #3557. WorldEdit builds earlier than this are not designed for Spigot 1.10 and may not work correctly.