BPC-lib and BPF-lib objects are collections of BPFs and BPCs.
BPF-libs and BPC-libs have two inputs and outputs :
"self" : the object itself, a BPF-Lib or BPC-Lib
"bpf / bpc list" : a list of BPFs or BPCs.
BPF-lib and BPC-lib instances can be created
The BPF-lib or BPC-lib precision is automatically adapted to the highest "decimal" value of the BPF or BPC objects of the list.