v0.3.0 security and edge case improvement all around

doc.go

@@ -1,4 +1,3 @@
-// FILE: auth/doc.go
 package auth
 
 /*
@@ -37,6 +36,7 @@ Server and client implementation for SCRAM:
 
 	// Server
 	server := auth.NewScramServer()
+	defer server.Stop()
 	server.AddCredential(credential)
 
 	// Client
@@ -50,4 +50,4 @@ Utility functions for HTTP headers:
 	token, _ := auth.ParseBearerToken(header)
 
 Each module can be used independently without initializing other components.
-*/
+*/