Merge pull request vapor#119 from docterd/missing_array_operators

Add missing array operators

Author: tanner0101

Sources/PostgreSQL/SQL/PostgreSQLBinaryOperator.swift

@@ -23,7 +23,7 @@ public struct PostgreSQLBinaryOperator: SQLBinaryOperator, Equatable, Expressibl
 
     /// See `SQLBinaryOperator`.
     public static let equal: PostgreSQLBinaryOperator = "="
-
+    
     /// See `SQLBinaryOperator`.
     public static let greaterThan: PostgreSQLBinaryOperator = ">"
 
@@ -65,7 +65,16 @@ public struct PostgreSQLBinaryOperator: SQLBinaryOperator, Equatable, Expressibl
 
     /// See `SQLBinaryOperator`.
     public static let isNot: PostgreSQLBinaryOperator = "IS NOT"
+    
+    /// See `SQLBinaryOperator`.
+    public static let contains: PostgreSQLBinaryOperator = "@>"
 
+    /// See `SQLBinaryOperator`.
+    public static let isContainedBy: PostgreSQLBinaryOperator = "<@"
+
+    /// See `SQLBinaryOperator`.
+    public static let overlap: PostgreSQLBinaryOperator = "&&"
+    
     /// See `SQLBinaryOperator`.
     public static let like: PostgreSQLBinaryOperator = "LIKE"