Better calculation of first non-zero node polar angle

This angle is a standard metric of the angular spread of an optical fiber's output radiation.

0.8.1 (5/5/2024)

• Implemented FF_node_polar_angle (@matt8s)
• Added FF_node_polar_angle() example to 9-Far-field-irradiance.ipynb (@matt8s)
• Modified _FF_polar_x to take argument kasin (@matt8s)
• Improved configuration for ruff linting tool
• Edited Jupyter notebooks
• Added images and improved README

0.8.0 (2/13/24)

• add functions for far-field irradiance (thanks @matt8s)
• improve calc of b for cylindrical step fibers for large V
• add new notebook for far-field irradiance
• enable use of arrays in cylinder_step.LP_mode_value()

Improved b calculation for large V

0.8.0 (2/13/24)

• add functions for far-field irradiance (thanks @matt8s)
• improve calc of b for cylindrical step fibers for large V
• add new notebook for far-field irradiance
• enable use of arrays in cylinder_step.LP_mode_value()

Better packaging

0.7.1 (9/21/23)

• fix long-description for pypi

0.7.0 (9/21/23)

• better handling of propagation factor b
• add import boilerplate needed for Jupyterlite
• Makefile packaging for Jupyterlite file
• use version and other dunders
• flake8 now passes
• fix various docstrings
• readthedocs fixes
• ruff support
• add erbium fiber doc
• clean up notebooks
• add copyright stuff
• add .github actions
• update badges
• conda support

Pure Python Release

v0.6.2 (9/5/2021)

• create pure python packages
• include wheel file
• package as python3 only

v0.6.1 (3/26/2021)

• add colab and binder badges
• improve docs
• rename dispersion api
• start using more descriptive names in notebooks

v0.6.0 (1/5/2021)

• improve help()
• improve sphinx docs
• new names

v0.6.1

v0.6.1 (3/26/2021)

• add colab and binder badges
• improve docs
• rename dispersion api
• start using more descriptive names in notebooks

v0.6.0 (1/5/2021)

• improve help()
• improve sphinx docs
• new names

Better help and html docs

Adding more documentation and making it easier to find.

I also renamed some routines in the API.

New packaging, new html docs

Update to use sphinx and https://ofiber.readthedocs.io effectively.

Small improvements to examples and API documentation.