some suggested changes to the template [ci skip]

ISSUE_TEMPLATE.md

@@ -9,19 +9,23 @@ Please replace this line with a brief summary of your issue.
 
 To check that you are really seeing a bug, please write a short, self-contained
 document that shows the problem. This should include the `latexbug` package,
-which will warn if you are using any third-party packages or document classes.
+which will warn if your test file is not suitable for one or the other reason.
+See CONTRIBUTING for details and also if you need to obtain the package.
+
 If the bug turns out to be with third-party software then please contact the
 developer, and not us!
 
 ```latex
-\RequirePackage{latexbug}
+\RequirePackage{latexbug}     % <--should be always the first line!
 \documentclass{article}
 \begin{document}
 % Demonstration of issue here
 \end{document}
 ```
-## Log file
+## Log (and possibly PDF) file
 
 Once you have constructed a minimal example, run LaTeX on *exactly* that input
-and check that `latexbug` doesn't pick up any third-party files. If all looks
-good, attach the `.log` file by dragging-and-dropping onto the issue report.
+and check that `latexbug` doesn't report any problems. If all looks
+good, attach the `.log` file by dragging-and-dropping it onto the issue report.
+
+In some cases it may also be helpful to attach the resulting .pdf file.