BUILD: Nonzero compat bounds for dependencies.

This is apparently now required by the Julia package registry.

Project.toml

@@ -29,22 +29,22 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 StructArrays = "09ab397b-f2b6-538f-b94a-2f83cf4a842a"
 
 [compat]
-AutoHashEquals = "^0"
+AutoHashEquals = "0.2"
 Compat = "^1, ^2, ^3"
 Compose = "0.7, 0.8, 0.9"
-DataStructures = "^0"
+DataStructures = "0.17, 0.18"
 FunctionWrappers = "^1"
-GeneralizedGenerated = "^0"
-JSON = "^0"
+GeneralizedGenerated = "0.2"
+JSON = "0.20, 0.21"
 LightGraphs = "^1.3"
-LightXML = "^0"
-MLStyle = "^0"
+LightXML = "0.8, 0.9"
+MLStyle = "0.4"
 MetaGraphs = "^0.6"
-Parameters = "^0"
-Reexport = "^0"
+Parameters = "0.11, 0.12"
+Reexport = "0.2"
 Requires = "^1"
-StaticArrays = "^0"
-StructArrays = "^0"
+StaticArrays = "0.12"
+StructArrays = "0.4"
 julia = "1.0"
 
 [extras]