Update issue templates

Author: dbretty

.github/ISSUE_TEMPLATE/vulnerability.md

@@ -0,0 +1,10 @@
+---
+name: Vulnerability
+about: Template for reporting a vulnerability.
+title: Vulnerability
+labels: ''
+assignees: ''
+
+---
+
+Please describe the vulnerability you have found including links to any code you may feel is vulnerable.