Complete dropped albums list with all 89 truly dropped albums from 2020

- Added all 89 albums that were genuinely dropped from 2020 to 2023
- Fixed incorrect status markings (many albums marked "New in 2023" were not new)
- Removed duplicates and albums incorrectly marked as dropped
- Final count: 589 total (500 main list + 89 dropped)
- Updated JavaScript validation for extended range
- Created comprehensive analysis scripts to verify data

Math now adds up correctly: 89 albums dropped to make room for new additions

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

scripts/create_2020_simple.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+"""
+Create a simplified version of the 2020 CSV with only Rank, Artist, and Album columns.
+"""
+
+import csv
+
+def main():
+    # Read the 2020 CSV and extract only needed columns
+    simplified_albums = []
+    
+    with open('rolling_stone_top_500_albums_2020.csv', 'r', encoding='utf-8') as file:
+        reader = csv.DictReader(file)
+        for row in reader:
+            simplified_albums.append({
+                'Rank': row['Rank'],
+                'Artist': row['Artist'],
+                'Album': row['Album']
+            })
+    
+    # Write simplified CSV
+    with open('rolling_stone_2020_simple.csv', 'w', newline='', encoding='utf-8') as file:
+        fieldnames = ['Rank', 'Artist', 'Album']
+        writer = csv.DictWriter(file, fieldnames=fieldnames)
+        writer.writeheader()
+        writer.writerows(simplified_albums)
+    
+    print(f"✅ Created simplified 2020 CSV with {len(simplified_albums)} albums")
+
+if __name__ == "__main__":
+    main()