Resolve "Feature: Send enpoint for non-terminal using implicit NTA"

Closes #36 (closed)

• Categorize changes in Indermediate.jrag
• Update documentation

ragconnect.base/src/main/jastadd/parser/RagConnect.parser

@@ -54,6 +54,7 @@ EndpointDefinition endpoint_definition
 
 EndpointDefinition endpoint_definition_type
   = SEND endpoint_target.t                        {: return createEndpointDefinition(t, true,  false, false); :}
+  | SEND INDEXED endpoint_target.t                {: return createEndpointDefinition(t, true,  true,  false); :}
   | RECEIVE endpoint_target.t                     {: return createEndpointDefinition(t, false, false, false); :}
   | RECEIVE INDEXED endpoint_target.t             {: return createEndpointDefinition(t, false, true,  false); :}
   | RECEIVE WITH ADD endpoint_target.t            {: return createEndpointDefinition(t, false, false, true ); :}