Merge pull request #120 from JuliaGaussianProcesses/compathelper/new_version/2020-06-16-00-15-39-411-2104314293

CompatHelper: bump compat for "PDMats" to "0.10" for package test

Author: theogf

test/Project.toml

@@ -18,7 +18,7 @@ FiniteDifferences = "0.10"
 Flux = "0.10"
 ForwardDiff = "0.10"
 Kronecker = "0.4"
-PDMats = "0.9"
+PDMats = "0.9, 0.10"
 ReverseDiff = "1.2"
 SpecialFunctions = "0.10"
 Zygote = "0.4"