Merge pull request #516 from SciML/compathelper/new_version/2020-05-19-20-04-44-135-35553828

CompatHelper: bump compat for "ChainRulesCore" to "0.8"

Author: ChrisRackauckas

Project.toml

@@ -37,7 +37,7 @@ ZygoteRules = "700de1a5-db45-46bc-99cf-38207098b444"
 
 [compat]
 ArrayInterface = "2.6"
-ChainRulesCore = "0.4, 0.5, 0.6, 0.7"
+ChainRulesCore = "0.4, 0.5, 0.6, 0.7, 0.8"
 ConsoleProgressMonitor = "0.1"
 DataStructures = "0.17"
 DocStringExtensions = "0.8"