I may be a bit late to the party, but here's a modded version of a file to allow different game behaviour/found things on the code. It includes infinite double jumps (useful for D2), cheat codes found for DreamWorld (and modified them to give all giftable items), relationship point growth faster by speaking (+10 instead +1) and gifting in DW (x10), dash consumes less stamina and can be done faster, easier bear games of jigsaw and blackjack (he appears on between the two rocks way between Velvet's camp and your base, not the rocks at water level, but on a high-medium level terrain after going to DW, I think).
More detailed info is at the .txt, and there are things I touched trying to change damage output, but I think I did not succeed. Remember to backup saves and original file.
On this type of projects, I recommend to come once every half year or more, because the updates take time to affect the game in a susceptible capacity, plus there are bugs that are iron out with time. For example, my last contact with this project was 3 years ago when it was called "Sweet Island," left it in the oven knowing that it was being restarted.
Now I come and see the game has content and it's in its way, with its nitpicks about lack of some controls and mechanics (like the kitchen that doesn't say you have to fill the water compatment for cooking or it takes the resources from the chest), but hey, it's far better now than then, so I see a good improvment. If you wait update by update, the game will always look that it is not advancing. About crashes, I did not have any, but it might be because I have the game on the HDD and only played the f version.
I compare this game with Northwood (another game with MMD assets), and I see this one has better quality at better gameplay and performance at less development time. Of course, each project has its own constrains, focus and goals, making them different, but personally I like this one better than others. This is at least my opinion, you have yours.
PD: Don't know if I'll get in trouble by uploading a .rar due that I have never posted before. Read the rules and only found restriction on posting links if you have less than 3 posts. If see anything I've to edit, please tell me. I'm just a lurker of internet. Ask if you've any questions. I don't know anything about the called cheatables and I consider that using a savefile just takes the fun of the game, but that's just on me.