v3.51.0

Updates

• Custom tags delimiters are now always applied if set (before: only if the file does not contain any multi-valued tag)
• Added a way to dump internal execution traces, to better understand performance issues (to be enabled via tracing-level in lms.conf)
• Various performance improvements:
  • File scanning jobs are distributed more efficiently between threads
  • The last stage of the analysis (checking the existence of files) is way faster on very large databases (>500k files)
  • Removed some useless writes in the database