Some regular fixes

210606

close #8

Mazino did it, not me

Added MapWriter export

Oh my Gosh that's new release !!1one

The release with new dimensions
Also added a filtering ores by the dimension combobox WOW

Two features !!1

Added refresh button
Seed can be string (hashcode will be calculated)

Fix JM export

Merge pull request #2 from KpoxaPy/master

Fix nether export bug & add dimId to wp filename