[skip travis] Update some github documentation.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -3,7 +3,7 @@ name: Bug report
 about: Found a bug?  Make sure it hasn't already been filed/solved - if so, please report it!
 title: ""
 labels: "bug"
-assignees: "ClementTsang"
+assignees: ""
 ---
 
 ## Describe the bug

.github/ISSUE_TEMPLATE/feature_request.md

@@ -3,7 +3,7 @@ name: Feature request
 about: Got a good idea that hasn't already been mentioned?  Suggest it!
 title: ""
 labels: "enhancement"
-assignees: "ClementTsang"
+assignees: ""
 ---
 
 ## Describe the feature request

.github/pull_request_template.md

@@ -23,6 +23,7 @@ _Please state how this was tested:_
 
 _Please ensure all are ticked (and actually done):_
 
+- [ ] Feature itself has been tested and verified to work
 - [ ] Code has been linted
 - [ ] Code has been self-reviewed
 - [ ] Code has been tested and no new breakage is introduced