It's a library for do something .net core can do but those feature has been block by language rule, like pointer for Vb.net or tail call recursion in C#.
It also include some quality of life feature like pre build recursion function and fraction format (it's much better for me to keep it in fraction format instead float number.)
Just some rush reason to stick my code to GitHub Arctic Code Vault, also I think many of method name is explain themself enough.
You need ils.dll from project Intermediate Language Script in the same place with exs.dll .