I have a few external js files that I call in my page, at the moment these are called via script tags in the header.
I am tempted to pull these locally and include them in my themes script file to decrease the load time of the page. I know there is an overhead to keeping the scripts up to date but if it decreases the total load time of the page it may be worth it.
Is there a good practice for this? Should I keep them external or is it good to include them in the drupal JS structure?