Add changelog for 0.5.0 (#107)

Author: kezhenxu94

.asf.yaml

@@ -35,6 +35,4 @@ github:
         strict: true
         contexts:
           - CheckStatus
-      required_pull_request_reviews:
-        dismiss_stale_reviews: true
-        required_approving_review_count: 1
+

CHANGELOG.md

@@ -1,5 +1,29 @@
 ## Change Logs
 
+### 0.5.0
+
+- New plugins
+    - Pyramid Plugin (#102)
+    - AioHttp Plugin (#101)
+    - Sanic Plugin (#91)
+
+- API and enhancements
+    - `@trace` decorator supports `async` functions
+    - Supports async task context
+    - Optimized path trace ignore
+    - Moved exception check to `Span.__exit__`
+    - Moved Method & Url tags before requests
+
+- Fixes:
+    - `BaseExceptions` not recorded as errors
+    - Allow pending data to send before exit
+    - `sw_flask` general exceptions handled
+    - Make `skywalking` logging Non-global
+
+- Chores and tests
+    - Make tests really run on specified Python version
+    - Deprecate 3.5 as it's EOL
+
 ### 0.4.0
 
 - Feature: Support Kafka reporter protocol (#74)