Add optional TerraBlender biome integration and cave biome pages (#37)

gradle.properties

@@ -36,8 +36,9 @@ mod_name=Rivencraft
 # The license of the mod. Review your options at https://choosealicense.com/. All Rights Reserved is the default.
 mod_license=LGPL-3.0-or-later
 # The mod version. Rivencraft uses the x.y.z.b policy documented in README.md.
-mod_version=0.4.7.4
+mod_version=0.4.8.1
 immersive_portals_version=6.0.7
+terrablender_version=4.1.0.8
 # The group ID for the mod. It is only important when publishing as an artifact to a Maven repository.
 # This should match the base package used for the mod sources.
 # See https://maven.apache.org/guides/mini/guide-naming-conventions.html