Lapin is temporary unavailable on github, website and cloud.
I will be back with it as soon as possible.
I am rewriting the dependecy of it to the IFClite engine - and port it to my own BubbleBIM C# engine.
Due some criticism from the IFClite comunity - I decided to make the project completly independent.
I don't have the strenght in me to argue with anyone on this.
Sorry for the incovenience. It will be back in a few days!