Release 4.2.0

* add pyramid focal plane visualization
* add md report generation in check.py
* update documentation generation using doxygen
* add natural integration of FP16 and complex in python
* add KECK aperture type
* better ELT Pupil generation
* drop BRAHMA, use CACAO interface instead
* computes PSF in every iteration
* add frame calibration
* remove KALMAN support
* add pyramid modulation weight
* add ```filter_TT``` parameter in centroider
* add modal integrator control law

for Internal developments:

* add custom pyr modulation script to handle natural guide dual-stars and resolved NGS
* add hunter integration optional