Update issue templates

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,32 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior: Please provide a complete [minimal reproducible example](https://en.wikipedia.org/wiki/Minimal_reproducible_example).
+
+Please provide any reproducing reproducers in **C**.
+If your issue is related to *modelDescription.xml* parsing, kindly provide relevant entries in _cleartext_.
+
+**Observed behavior**
+Please describe observed issues and provide error messages and log output in _cleartext_.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen and why. 
+
+Please make sure that the expected behavior corresponds to the FMI specification, see [specification documents](https://fmi-standard.org/).
+
+**Versions**
+ - Version, e.g., _3.0.a4_, current master or a particular commit
+ - any other relevant information about your environment
+
+**Additional context**
+Add any other context about the problem here.