Create Enhancement issue template

closes #599

.github/ISSUE_TEMPLATE/enhancement.md

@@ -0,0 +1,24 @@
+---
+name: Enhancement / Feature request
+about: Request a new feature or other enhancement
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Describe the enhancement**
+
+A clear and concise description of what you would like changed or added
+
+**Expected behavior**
+
+A clear and concise description of what you expect to happen.
+
+**Considered workarounds**
+
+Workarounds you may have considered can help us with how to implement your idea.
+
+**Additional context**
+
+Add any other context about your request here