Update issue templates

Author: Patrick Lapointe

.github/ISSUE_TEMPLATE/bug_report.md

@@ -30,3 +30,4 @@ Content of the log here
 <!--- When revelent, it can be usefull to see your code -->
 ```c++
 Put the content of your code here when needed
+```

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,4 +7,13 @@ assignees: ''
 
 ---
 
-<!--- Request a new feature / modification to this lib. If the request is related to a problem, please describe. -->
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional information**