Update CHANGELOG for version 0.7.1.

Author: python-processing-unit

docs/CHANGELOG.html

@@ -28,6 +28,28 @@
 
 ---
 
+## 0.7.1
+
+### Backwards-incompatible features
+
+N/A
+
+### Backwards-compatible features
+
+N/A
+
+### Patches
+
+Allow symbol creation via `ASSIGN`.
+
+Allow `DEL` calls on `MAP` indexes.
+
+Fix `-source` mode module name.
+
+Fix `TYPE` documentation.
+
+---
+
 ## 0.7.0
 
 ### Backwards-incompatible features