v6.3.9

• Added HTML5 drag & drop feature
• Added detailed information in Lucene index process
• Added createMissingFolders method in the API
• Fixed error in administration when choosing path with special characters
• Fixed temp files were not removed
• Added isCallingMe method in StacktraceUtils to detect recursive plugin calls
• Fixed issue with the logo which was not changing in the login screen
• Fixed UI defect with workflow instance with run_config
• Fixed maven dependency conflicts