Added namespace to Context

Sources/Context.swift

@@ -1,15 +1,17 @@
 /// A container for template variables.
 public class Context {
   var dictionaries: [[String: Any]]
+  let namespace: Namespace
 
-  /// Initialise a Context with a dictionary
-  public init(dictionary: [String: Any]) {
-    dictionaries = [dictionary]
-  }
+  /// Initialise a Context with an optional dictionary and optional namespace
+  public init(dictionary: [String: Any]? = nil, namespace: Namespace = Namespace()) {
+    if let dictionary = dictionary {
+      dictionaries = [dictionary]
+    } else {
+      dictionaries = []
+    }
 
-  /// Initialise an empty Context
-  public init() {
-    dictionaries = []
+    self.namespace = namespace
   }
 
   public subscript(key: String) -> Any? {

Sources/Template.swift

@@ -36,9 +36,10 @@ public class Template {
   }
 
   /// Render the given template
-  public func render(context: Context? = nil, namespace: Namespace? = nil) throws -> String {
-    let parser = TokenParser(tokens: tokens, namespace: namespace ?? Namespace())
+  public func render(context: Context? = nil) throws -> String {
+    let context = context ?? Context()
+    let parser = TokenParser(tokens: tokens, namespace: context.namespace)
     let nodes = try parser.parse()
-    return try renderNodes(nodes, context ?? Context())
+    return try renderNodes(nodes, context)
   }
 }