Lfdfiles

- Read CZI files via czifile module.
- Read Olympus Image files via oiffile module.
- Read Netpbm formats via netpbmfile module.
- Add B64, Z64, and I64 write functions.
- Remove support for Python 2.7 and 3.5.

- Require tifffile 2019.7.2.
- Remove some utility functions.

- Read and write Bio-Rad(tm) PIC files.
- Read and write Voxx MAP palette files.
- Rename SimfcsMap to Ccp4Map and SimfcsV3draw to Vaa3dRaw (breaking).
- Rename save functions.

- 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.