Isofit

- Adds additional MODTRAN multipart transmittance capacity
- Parallel extraction / segmentation of images
- Refined apply_oe procedure, using physical LUT spacing.
- sRTMnet integration into hypertrace
- GP interpolation of atmospheric fields
- Bug fixes and procedural refinements

See project board for full detail (https://github.com/isofit/isofit/projects/4)

Updates on the path to isofit v3.0. See the project board (https://github.com/isofit/isofit/projects/4) for more details.

- Thermal framework added
- Hypertrace workflow integrated for coupled simulations and inversions
- apply_oe.py generalizations
- Integration of sRTMnet emulation
- Simplified installation and increased documentation (more still needed)
- Bug fixes and general speedups

Intermediate release on the path to isofit v3.0. See the project board (https://github.com/isofit/isofit/projects/4) for more details.

- New object-oriented configuration classes, with basic checks implemented.
- Automated documentation building, with corresponding read-the-docs site.
- Upgraded parallelism with ray, includes multi-node capacity.
- Updated apply_oe script for basic user runs using the MODTRAN rte.
- Updated optimization convergence parameters, and multistart capacity.
- General bugfixes and speedups.
- Increased documentation.

Cleans up code and adds a new TIR example. Fully backwards compatible. Details:

- No major changes to functionality
- Standardized the fit_params() interface
- Removed vestigial surf_emissive.py
- New thermal infrared example for unit testing
- PEP8 line width compliance

Various minor improvements:

* Remove extra prints in inverse_grid
* Change conditional_gaussian to use svd_inv
* Use cluster mean for TIR surface init
* Add surface T params to config and set defaults

Bug fixes to radiative transfer, that only effect emissive calculations

Fully backwards compatible.