Fix entities with passengers cannot travel thorough portal (MC-67) and other passenger related features.

Create custom world portal to travel between dimensions.

Fix hardcoded behavior of dimension mainly for custom dimension.

Add more cat variants.

Add beta 1.7.3 world generation as separate dimension.

Create portal link between dimensions to make custom world sets.

Add portal support to cart contraption, coupled cart, and compatibility with other portal mods.

Add superflat world type as separate dimension.

Add amplified world type as separate dimension.

Add desert single biome world type as separate dimension.

Add modified biome sources that can be configured.

Add large biomes world type as separate dimension.

Add the void superflat world type preset as separate dimension.

Add mushroom fields single biome world type as separate dimension.

Add badlands biomes as separate dimension.

Add forest biomes as separate dimension.

Add compatibility between Modified Biome Source and TerraBlender.

Add vanilla dimensions while keeping the original dimensions.

Fix player cannot use portal while flying with elytra.

Link Overworld to The End dimension with additional The End Gateway tweaks and special support for Happy Ghast from Vanilla Backport mod.