BetterTerrainAddon-1.3.0

• Added climate zones. This can be configured at world creation, and is enabled by default. This means biomes will now be clustered according to their climate: Snowy, cold, temperate, tropical, or arid. Climates are randomly distributed, then smoothed to prevent disjointed transitions between climates. A full list of which biomes belong to which climate is available in the OP.
• Added height-dependent snowfall in cold biomes. Snow will fall anywhere in these biomes above y=95. This only affects new worlds.
• Added frozen springs as a new snowy biome which can generate reeds.
• Added boreal forest as a new cold taiga variant (wolves) and renamed the old boreal forest to temperate forest.
• Added mangal (mangrove forest) as a new temperate jungle variant (temples, jungle spiders, reeds).
• Added arid forest as a new arid forest variant (duh). Arid forest also replaces woods as a sub-biome for plains in new worlds.
• Added shield as a new cold taiga variant (wolves).
• Added brushland as a new cold plains variant (villages, pumpkins).
• Added highlands as a new temperate mountain variant (emeralds, silverfish).
• Added pockets of water to wetlands, willow grove, jungle, and rainforest, similar to how vanilla generates water in jungles and swamps. This only affects new worlds.
• Added small oasis pockets inside lush deserts in addition to the large ones. This only affects new worlds.
• Added the ability for reeds to spawn in patagonia, plains, and temperate forest. In the new climate distribution system it was possible to have extremely large distances between biomes which could spawn reeds, which could be a problem given how vital they are early game. So this, combined with frozen springs above, ensures every climate is capable of spawning reeds in at least one biome. However, tropical climates remain where reeds can be found most commonly.
• Added the ability for melons to spawn on the surface in jungle variants (jungle, rainforest, tropics, mangal).
• Added the ability for emeralds and silverfish to spawn in dunes.
• Added a hook for other addons to add their own biomes to BTA world generation.
• Changed configuration menu to have biome configration on its own page.
• Changed the formatting of the generator options string. The old format will still be processed correctly for old worlds but will not contain any new options. The new format ignores whitespace, has labels for all options, and is order-agnostic.
• Changed ocean size configuration to be a scale from 1 (off) to 10 (vanilla), defaulting to 5.
• Changed (increased) possible biome size ranges to 0.5x to 4x vanilla (Original BTA was 2x, vanilla large biomes is 4x). As a part of this, small world types have been deprecated as biome size information is now handled through generator options. These world types will continue to function for existing worlds but may no longer be created.
• Changed the default biome size to vanilla sized biomes as the new climate zone system tends to spread out dissimilar biomes further than before.
• Changed the display name of a few biomes in world configuration to match the generic name rather than specific sub-biome names. Internal biome names remain the same, and are still listed in the OP (internal biome names only concern texture pack authors using MCPatcher).
• Changed oases to no longer spawn sand from better shorelines. This only affects new worlds.
• Changed biome colors for plains and steppe.
• Changed tundra to no longer be a valid biome for world spawn.
• Fixed an issue where frozen rivers weren't frozen. Any which have generated in your world in the last release that weren't frozen will naturally refreeze as you spend time near them. The biome locations were correct, just not the precipitation data.
• Fixed an issue where wetland hills and willow grove hills would spawn standard rivers within them and not jungle rivers, leading to mismatched water color.
• Fixed an issue where beta and skylands world types always generated vanilla sized biomes, regardless of world configuration settings.