Optimize boolean indexing in CircularResistiveWall

See merge request !15

Nonlinear chromaticity

See merge request !16

Fix docstrings

Merge branch 'feature-nonlinear-chromaticity' of gitlab.synchrotron-soleil.fr:PA/collective-effects/mbtrack2 into feature-nonlinear-chromaticity

changed chromaticity computation in _compute_chro() of transverse_map_sector_generator(). Now it can compute arbitrary order of chromaticity from AT.

Merge branch 'feature-nonlinear-chromaticity' of gitlab.synchrotron-soleil.fr:PA/collective-effects/mbtrack2 into feature-nonlinear-chromaticity

- moved the above function to be inside the TransverseSectorMap
- changes phase_advance_* variables to tune_advance_* variables where appropriate

- moved the above function to be inside the TransverseSectorMap
- changes phase_advance_* variables to tune_advance_* variables where appropriate

- np.random.normal -> np.random.standard_normal, 10% faster
- N = len(bunch) to compute the number of particles only once

- TransverseMap now inherits from TransverseSectorMap
- chromaticity phase shift is computed in _compute_chromatic_phase_advances()
- some optimisation of the code, (250 ms -> <50 ms) speed up for typical
  simulation

Faster CircularResistiveWall

See merge request !14

v0.7.0

See merge request !13

Fix readthedocs link and add pypi badge and link

Prepare release v0.7

See merge request !12

Yokoya elliptic (reopened)

See merge request !3

Update methods for ImpedanceModel and BeamLoadingEquilibrium

See merge request !11

The energy_loss and power_loss_spectrum methods for ImpedanceModel can now take any bunch spectrum in optional agrument.
Add bunch_spectrum and plot_bunch_spectrum to BeamLoadingEquilibrium.
Apply formatters and update notebook