devmotion/CalibrationErrors.jl: v0.5.0

Diff since v0.4.0

Merged pull requests:

• Generalize linear estimator to block estimator (#15) (@devmotion)
• Update KernelFunctions and remove TensorProductKernel (#16) (@devmotion)
• Add support for StatsBase 0.33 (#17) (@devmotion)
• Create bors.toml (#18) (@devmotion)
• Update bors.toml (#19) (@devmotion)
• Replace AppVeyor with Github Actions (#20) (@devmotion)
• Make it easier to implement evaluations for TensorProduct kernels (#21) (@devmotion)