Lenstronomy

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* bug fix in Hession of POINT_SOURCE model
* EPL model from Tessore et al. 2015 implemented
* multi-observation mode for kinematics calculation

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* Re-naming SPEMD to PEMD, SPEMD_SMOOTH to SPEMD
* adaptive numerics improvement
* multi-processing improvements

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* Major re-design of GalKin module, added new anisotropy modeling and IFU aperture type
* Updated design of the Analysis.kinematicsAPI sub-module
* Convention and redundancy in the Cosmo module changed
* NIE, SIE and SPEMD model consistent with their ellipticity and Einstein radius definition
* added cored-Sersic profile
* dependency for PSO to CosmoHammer removed
* MPI and multi-threading for PSO and MCMC improved and compatible with python3

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* image position likelihood description improved

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* First implementation of a LightCone module for numerical ray-tracing
* Improved cosmology sampling from time-delay cosmography measurements
* TNFW profile lensing potential implemented

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* Analysis module re-designed
* GalKin module partially re-designed
* Added cosmography module
* parameterization of cartesian shear coefficients changed