Provide better exceptions for errors when building the mapping plan#4577

jbogard merged 2 commits intomasterLuckyPennySoftware/AutoMapper:masterfrom

4563-provide-better-diagnostic-exceptions-for-expression-tree-errorsLuckyPennySoftware/AutoMapper:4563-provide-better-diagnostic-exceptions-for-expression-tree-errorsCopy head branch name to clipboard