• Expose reference type further up (follow up to #1224) #1263
• Allow PDF files for the thumbnail generation #1297
• Fix styleci config #1299
• Update aws_s3.rst with clarifications re service setup #1302
• Extend WatermarkFilter with multiple option #1281
• Add WebP image conversion support #1307
• Replace assertContains with assertStringContainsString #1317
• Fix skipped functional tests with Symfony 5.x #1316