v1.1.0

v1.1.0 by @eugeneberta: Improvements to the SVS and SMS calibrators:

• logit pre-processing with 'ts-mix' is now automatic,
  and the global scaling parameter $\alpha$ is fixed to 1. This yields:
  • improved performance on our tabular and computer vision benchmarks
    (see the arxiv v2 of the SMS paper, coming soon).
  • faster convergence.
  • ability to compute the duality gap in closed form for stopping SAGA solvers,
    which we implement in this version.
• improved L-BFGS solvers, much faster than in the previous version.
  Now the solver for default SVS and SMS.
• the default binary calibrator in LogisticCalibrator is now quadratic scaling
  instead of affine scaling, this can be changed back by using
  LogisticCalibrator(binary_type='affine').