MSC dependency now is actually cancelled by using the in-game map merging system that is finally not broken anymore. Testing shows installing DS+ doesn't break the modded Exterior map

Removed MSC dependency (i hope)
Added underhang section

[ChangeLog 1.01]
Chinese description added in-game.

[ChangeLog 1.0]
1. Included the plugin made by WillowWisp in Drainage System + (Usage authorized by Jevmen). In this version you no longer need to install DS+ for the map in Expanded Leg to work. I did a preliminary test with DS+ also enabled, but it doesn't seem to crash with 2 copies of the plugin enabled. Let me know if you experience problems with it.
2. The map of Rivulet has been fixed, I think as a result of including the plugin.

[ChangeLog 0.9Beta]
1. Adjusted the geometry and creature spawns of UW_X05 so that you have an extra grapple worm and can opt to not use grapple worms at all;
2. Adjusted the spawns for Gourmand so that it aligns with the spawns of the original Leg as gourmand;
3. Fixed the broken maps for all slugcats except for Rivulet. Unfortunately, I have not been able to find a fix for ruffles.