V4.0.6

Author: ddc

.github/PULL_REQUEST_TEMPLATE

@@ -7,8 +7,8 @@
     - [ ] I have updated the documentation to reflect the changes.
 - [ ] I have thought about how this code may affect other services.
 - [ ] This PR fixes an issue.
+- [ ] This PR add/remove/change unit tests.
 - [ ] This PR adds something new (e.g. new method or parameters).
-- [ ] This PR have unit tests (e.g. tests added/removed/changed)
 - [ ] This PR is a breaking change (e.g. methods or parameters removed/renamed)
 - [ ] This PR is **not** a code change (e.g. documentation, README, ...)