functionality from holumbus2 crawler integrated
module structure changed, Hayoo.Hayoo2 contains all JSON and Hayoo2 modules
JSON for function index completed
new dir structure for Hayoo: HayooLib, HayooIndexer, HayooSnap are subprojects with separate cabal files
compression benchmark added
index compression optimized, small occ sets are not compressed

benchmark results are stored in HayooIndexer/index/benchmarks