Update bug report template

Author: nicoespeon

.github/ISSUE_TEMPLATE/bug_report.md

@@ -9,34 +9,29 @@ assignees: ''
 ---
 
 **Describe the bug**
+
 A clear and concise description of what the bug is.
 
 **To Reproduce**
-Steps to reproduce the behavior:
 
-1.  Go to '…'
-2.  Click on '…'
-3.  Scroll down to '…'
-4.  See error
+Ideally, reproduce the issue [with the online playgound](https://codepen.io/nicoespeon/pen/arqPWb?editors=0010).
+
+Otherwise, please detail steps to reproduce the behavior. Add code if necessary.
 
 **Expected behavior**
-A clear and concise description of what you expected to happen.
+
+Clear and concise description of what you expected to happen.
 
 **Screenshots**
-If applicable, add screenshots to help explain your problem.
 
-**Desktop (please complete the following information):**
+If applicable, add screenshots to help explain your problem.
 
-- OS: [e.g. iOS]
-- Browser [e.g. chrome, safari]
-- Version [e.g. 22]
+**Context**
 
-**Smartphone (please complete the following information):**
+- Which library is impacted? (e.g. `@gitgraph/js` and `@gitgraph/react`)
+- Which version of the library is it?
+- What browser and version is impacted? (e.g. Chrome 74)
 
-- Device: [e.g. iPhone6]
-- OS: [e.g. iOS8.1]
-- Browser [e.g. stock browser, safari]
-- Version [e.g. 22]
+**Additional information**
 
-**Additional context**
 Add any other context about the problem here.