Changed
- Removed commands `load`, `save` and `export` to be re-added/ported into `go` as well
- [documentation] Updated the "Installation", "Development" and "Examples" sections of the README
- [internal] Ported all the code from `python` to `go`:
- easier installation: no more issues with interpreter version used and potential packages conflict
- easier development setup: no meta usage
- deeper integration with docker