add compat section for test dependencies (#70)

* add compat section for test dependencies

* julia 1.0 requires an older Documenter

* need a Test compat entry

Author: stevengj

Project.toml

@@ -4,6 +4,9 @@ version = "1.3.1"
 
 [compat]
 julia = "1"
+Aqua = "0.8"
+Documenter = "0.19,0.20,0.21,0.22,0.23,0.24,0.25,0.26,0.27, 1"
+Test = "1"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"