Update issue templates

Author: chschulte

.github/ISSUE_TEMPLATE/bug_report.md …b/ISSUE_TEMPLATE/bug-report-in-gecode.md.github/ISSUE_TEMPLATE/bug_report.md renamed to .github/ISSUE_TEMPLATE/bug-report-in-gecode.md .github/ISSUE_TEMPLATE/bug_report.md renamed to .github/ISSUE_TEMPLATE/bug-report-in-gecode.md

@@ -1,5 +1,5 @@
 ---
-name: Bug report
+name: Bug Report in Gecode
 about: Create a report to help us improve
 
 ---

.github/ISSUE_TEMPLATE/report-a-bug-in-gecode.md

@@ -0,0 +1,17 @@
+---
+name: Report a Bug in Gecode
+about: Create a report to help us improve
+
+---
+
+**Describe the bug**
+
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+
+Try to explain how to reproduce the bug.
+
+**Gecode and Platform Configuration**
+
+Please describe which version of Gecode you use, on which operating system, and with which C++ compiler (including its version).