v0.21.0 Release Preparation (#768)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: sdv-team

HISTORY.md

@@ -1,5 +1,11 @@
 # History
 
+## v0.21.0 - 2025-05-29
+
+### New Features
+
+* Add a violin plot visualizations to compare a pair of columns - Issue [#759](https://github.com/sdv-dev/SDMetrics/issues/759) by @R-Palazzo
+
 ## v0.20.1 - 2025-04-14
 
 ### Bugs Fixed

static_code_analysis.txt

@@ -1,4 +1,4 @@
-Run started:2025-04-14 17:22:41.156789
+Run started:2025-05-29 18:58:21.274050
 
 Test results:
 >> Issue: [B101:assert_used] Use of assert detected. The enclosed code will be removed when compiling to optimised byte code.
@@ -117,7 +117,7 @@ Test results:
 --------------------------------------------------
 
 Code scanned:
-	Total lines of code: 11344
+	Total lines of code: 11374
 	Total lines skipped (#nosec): 0
 	Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0