Miswcellaneous file support

[DonaldTsang]

• Compressed files
  • Zip
  • 7z
  • Gzip
  • XZ
  • Bzip2
  • ZPAQ

[DangerOnTheRanger]

I'd prefer to have descriptive/unique thumbnails for all supported attachment types, if possible. Do you have any suggestions for what would be descriptive/unique for a file archive?

I'm not opposed to implementing archive support in the attachment system since it would be a prerequisite for #98 in all likelihood, but I would like some further input.

[DonaldTsang]

@DangerOnTheRanger I would say, for compressed files, we can use unique hash thumbnails for it.

• Color strip (SVG) https://github.com/bengl/node-hashcolors
• Color strip (ANSI) https://github.com/solosodium/colorful-hash
• Ink Blots https://github.com/stuartpb/hashblot
• Bubbles https://github.com/dakridge/identicon
• Circular https://github.com/ea7ababe/identicon
• Triangles https://github.com/Mailea/origamicons
• Polygons https://github.com/yuvadm/polyhash
• Ring based https://github.com/Zunawe/identicons
• Ring based https://github.com/splitbrain/php-ringicon
• Jagged https://github.com/danfinlay/jazzicon
• Tornado https://github.com/popodidi/idoticon
• hexagon https://github.com/naknomum/hexicon
• Tiles https://github.com/danslocombe/tiledenticon
• Heart https://github.com/Schlipak/IdentiHeart

Other than that yeah code sandboxing is important.