new issue templae

.github/issue_template.md

@@ -1,26 +1,14 @@
-#### Check all platforms you experienced the issue (change to `[x]`)
-- [ ] Windows
-- [ ] Mac OS
-- [ ] Linux
-- [ ] Every platform
+#Please read carefully before submitting an issue
 
-#### What type of issue is?
-- [ ] bug or unexpected behavior
-- [ ] crash
-- [ ] feature request
-- [ ] other (specify...)
-
-#### Describe your issue
-
-...
-
-####Guidelines for a good issue
-
-Before submitting an issue: 
-
-- be as detailed as possible. If the issue is related to a specific mesh or file, please attach it. Make sure that the problem is reproducible; 
-- specify the operative system you are using and its version/distribution; if it is possible, verify if the problem persists in other platforms;
-- bspecify the MeshLab version you are using and be sure that your issue also happens on the last MeshLab version;
+- be as detailed as possible while describing an issue:
+  - which platform are you using (say it also on the subject of the issue)
+  - which version of meshlab are you using (e.g. 2020.09 portable. 2020.06 snap, 2020.12 installer)
+  - be sure that the issue is reproducible: list step by step all the operations performed to reproduce the issue
+  - if it applies, share all the involved files
+- if it is possible, verify if the problem persists in other platforms;
+- be sure that your issue also happens on the most recent MeshLab version;
 - check if your issue has been already reported by someone else. In this case, do not open another issue: just add your experience in the existing issue;
-- If the issue is specific of a platform, please specify it on the subject in square brackets (example: `[MacOS] crash when opening obj`);
-- delete these guidelines before submitting :)
+- delete these guidelines before submitting :)
+
+If it is not an issue but something else (need help, feature request, ...) consider to use github discussion: https://github.com/cnr-isti-vclab/meshlab/discussions
+