Mycorrhiza 1.15

[bouncepaw]

It's about time. I hope I'll do it before the summer ends.

Absolutely required for the release:

• [ ] #86
• [ ] #205
• [ ] Fix JSON feeds
• [ ] #218

Very nice to have:

• [ ] #213
• [ ] #124
  • Use Rosie's unfinished patch as a base?
• [ ] #220

Would renaming categories to tags to match Betula make sense and have any value?