Miner's Horizon

1.4.0 release of Miner's Horizon.

Changelog:

- custom stone hardness is now based on zone

- concept of zones re-added

- stone has custom hue depending on world depth

- custom ores from other mods now guaranteed work

- added config option for portal block

- added config options for zone positioning/stone darkness/stone hardness

- world height moved up to 200 to allow for more stuff

- stuff actually works