Lfdfiles

- Fix setup requirements.

- Add plots for GlobalsLif, SimfcsV3draw, and VistaIfli.
- Support Python 3.7 and numpy 1.15.
- Move modules into lfdfiles package.

- Update SimfcsB64 to handle carpets and streams.
- Command line interface for plotting and converting to TIFF.
- Registry of LfdFile classes.
- Write image and metadata to TIFF.
- Read TIFF files via tifffile module.

- Add R64 write function.

- Read and write Vaa3D RAW volume files.

- Initial support for plotting.