0.7.0

• gp:
  • Add analytic derivatives computations (#54, #55, #56, #58, #60). All derivatives available for all mean/correlation models are implemented.
  • Refactor MeanModel and CorrelationModel methods:
    • apply() renamed to value()
    • jac() renamed to jacobian()
  • Fix prediction computation when using linear regression (#52)
• ego:
  • Refactor Egor using argmin 0.7.0 solver framework EgorSolver can be used with argmin::Executor and benefit from observers and checkpointing features (#67)
  • Egor use kriging setting by default (i.e. one cluster with constant mean and squared exponential correlation model)
• Add notebook on Manuau Loa CO2 example to show GpMix/Gpx surrogate model usage (#62)
• Use xoshiro instead of isaac random generator (#63)
• Upgrade ndarray 0.15, linfa 0.6.1, PyO3 0.17 (#57, #64)