fix compat entries for LightXML and Dates

Updated LightXML version and added Dates compatibility.

Author: samtkaplan

Project.toml

@@ -8,7 +8,8 @@ LightXML = "9c8b4983-aa76-5018-a973-4c85ecc9e179"
 
 [compat]
 julia = "1"
-LightXML = "^0"
+Dates = "1"
+LightXML = "0.9"
 
 [extras]
 BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"