Migrate to test item framework

Author: davidanthoff

Project.toml

@@ -8,10 +8,11 @@ Tokenize = "0796e94c-ce3b-5d07-9a54-7f471281c624"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+TestItemRunner = "f8b46487-2199-4994-9208-9a1283c18c0a"
 
 [compat]
 julia = "1"
 Tokenize = "0.5.24"
 
 [targets]
-test = ["Test"]
+test = ["Test", "TestItemRunner"]