Wonderland is all the tools we EODE, have developed and currently use for our projects. Like most studios we used to develop tools that had not enough documentation and were not well enough structured, which made them hard to use on different projects. So we decided to clean up all these different tools and assemble them to unify the way they work so that we can share them. Making it public will make sure we keep up to date the documentation and that it stays accessible to everyone.
Wonderland will always be based on the latest version of Unity without insuring retro-compatibility. The same goes for the C# version.
All modules are centered around a Common base. Most of these modules depend on this Common base, you can find a list of these modules on the first page of their documentation. Most of the features will be free, but not open-source (but you can use Dotpeek or ask me on Discord :)).