v1.5.1 (bug fixes, improvements)

New features

• Add gpytorch.kernels.PiecewisePolynomialKernel (#1738)
• Include ability to turn off diagonal correction for SGPR models (#1717)
• Include ability to cast LazyTensor to half and float types (#1726)

Performance improvements

• Specialty MVN log_prob method for Gaussians with sum-of-Kronecker covariances (#1674)
• Ability to specify devices when concatenating rows of LazyTensors (#1712)
• Improvements to LazyTensor symeig method (#1725)

Bug fixes

• Fix to computing batch sizes of kernels (#1685)
• Fix SGPR prediction when fast_computations flags are turned off (#1709)
• Improve stability of stable_qr function (#1714)
• Fix bugs with pyro integration for full Bayesian inference (#1721)
• num_classes in gpytorch.likelihoods.DirichletLikelihood should be an integer (#1728)