4.1.4

What's Changed

• modify license from Apache License 2.0 to CC BY-NC 4.0 (#22)
• upgrade dependent liblaries in Dockerfiles
  • Base image (cpu) : ubuntu:18.04 -> ubuntu:20.04
  • Base image (gpu) : nvidia/cuda:9.1-devel -> nvidia/cuda:11.1.1-devel-ubuntu20.04
  • FFTW : fftw-3.3.5 -> fftw-3.3.8