First release with new github actions

2.0.4

• allow fixed phi angle of 0° (thanks @cptyannick)
• fix zenodo and CITATION.cff
• fix pypi github action
• fix copyright
• fix manifest
• correct README.rst to use plot_image_analysis()
• tweak badges

Major changes from 2.0.0

• change default background removal to match ISO recommendation
• split monolithic laserbeamsize module in separate modules
• rationalized functions names (API changes!)