Easier World Creator (ewc)

3.0.19 update:

Changes:

• change the save delay of multichunk feature file from 1 min to 2 mins
• ShapePlacer does not add the multichunk feature by default

Fixes:

• fixed file not being locked in MultiChunkFeatureHandler#init()
• fixed multichunk feature file not being initialized
• fixed multichunk feature file being saved right after the initialiazon
• fixed structure piece being generated multiple times