Update GitHub issue templates

Add "bug" label to bug_report.md
Add "new" label to feature_request.md

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,9 +1,7 @@
 ---
 name: Bug report
 about: Let us know about an unexpected error, a crash, or an incorrect behavior.
-title: ''
-labels: new
-assignees: ''
+labels: bug, new
 
 ---
 

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,9 +1,7 @@
 ---
 name: Feature request
 about: Suggest a new feature or other enhancement.
-title: ''
-labels: enhancement
-assignees: ''
+labels: enhancement, new
 
 ---