Version 0.4.4

This minor release fine tunes difficulty.

New feature:

• Press Ctrl-D to copy world name.

Mirror:

• Restore 3/6 turns when hitting a phantom based on the number of new phantoms.
• PC's image cannot collect a crystal directly. However, his image can push a phantom image around.

Factory:

• Clarify that fake rare gadgets do not have to be far away from each other.

Ninja:

• Increase time stop duration by 1 turn.

Snowrunner:

• Onloading a unit of goods restores 4 turns.
• There are more potential offload zones.

Railgun:

• There are fewer passable grounds in the dungoen.
• Newly created NPCs are not too far away from PC.
• The special wall is not too far away from PC's start point.

Styx:

• After waiting, PC's sight range restores to normal in 3 turns, instead of 4.
• The lighthouse is dark grey by default. It turns to grey if PC is within 6 grids to a harbor.

Balloon:

• PC only needs to reach 3 beacons, instead of 4, to beat the game.
• Increase the number of walls and make them more scattered.

Desert:

• Being adjacent to a sandworm costs an extra 2N - 1 turns instead of 2N turns, where N is the number of nearby sandworm segments.