Create SECURITY.md

SECURITY.md

@@ -0,0 +1,13 @@
+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 4.0     | :x:                |
+| < 4.0   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+Report vulnerabilities to hamlib-developer@lists.sourceforge.net
+We will create an immediate security issue and hopefully fix it quickly