PULL_REQUEST_TEMPLATE

Author: FabriceSalvaire

.github/PULL_REQUEST_TEMPLATE.md

@@ -1 +1,4 @@
-To be written ...
+To make it easier to merge your pull request, you should divide your PR into smaller and easier-to-verify units.
+
+Please do not make a pull requests with a lot of modifications which are difficult to check.  If I merge
+pull requests blindly then there is a high risk this software will become a mess quickly for everybody.