Plotting enhancements
- Adds an ability to use vector fields other than `vel` in `plot.sph.velocity_image`
- Vector fields are now correctly depth-averaged in `plot.sph.velocity_image` if the main image is depth-averaged or integrated
- A mag/arcsec^2 range can now be specified to `plot.stars.render`
Bug fixes and miscellaneous enhancements
- Now loads RAMSES-RT radiation information
- Resolves an issue where a fraction of ramses cells at `levelmax` could go missing
- SubFind is now supported
- Removes the warning about logging which is now 2 years old
- Resolves a datatype issue when loading gadget files written by L-PICOLA and related codes
- Fixes an issue with `plot.sph.image` where `vmin` was not respected when negative values were present and log scaling selected
- Increases speed of loading large gadget files
- Resolves issues with numpy 1.10.x
- Fixes an issue with dimensionless arrays raising errors during unit conversions
- Added a new `fuzzy_match_catalog` to the `bridge` module, allowing identifications for halos to return confidence levels and alternative matches
- Fixes error loading AHF catalogs in python 3
- Documentation can now be built with python 3