
External dependencies

1. Google RE2 
    regular expression library
    https://github.com/google/re2
    
2. bxzstr
    header-only ZLib / libBZ2 streams
    https://github.com/tmaklin/bxzstr

3. hash
    C++14 header-only easy-to-use hash library
    https://github.com/Chocobo1/Hash 

4. BitMagic
    header-only succint data structures
    https://github.com/tlk00/BitMagic

5. spdlog
    header-only C++ logging library
    https://github.com/gabime/spdlog

6. CLI11
    header-only Command line parser for C++11
    https://github.com/CLIUtils/CLI11

7. JSON
    header-only JSON for Modern C++
    https://github.com/nlohmann/json.git    

8. TaskFlow
    General-purpose Parallel and Heterogeneous Task Programming System
    https://github.com/taskflow/taskflow


External libraries
1. re2
2. zlib
3. BZip2   
