4.0.0.beta2

• introduced image-magick command-line AssetHandler
  • can now generate also previews from webp/heic/heif
  • also can read resolutions/colors for new formats
  • lowered memory-usage and tuned speed
• added local-file storage engine (commons-asset-storage-fs)
• improved PathResolver for s3 and fs storage
  • now you can specify also the filename
  • simplified implementation flow
• many refactorings...