reporting error with its parent context

Sources/Context.swift

@@ -3,6 +3,10 @@ public class Context {
   var dictionaries: [[String: Any?]]
 
   public let environment: Environment
+  
+  public var errorReporter: ErrorReporter {
+    return environment.errorReporter
+  }
 
   init(dictionary: [String: Any]? = nil, environment: Environment? = nil) {
     if let dictionary = dictionary {