1 
2 * Threading:
3 
4 Uploads run in parallel with main fs operation.
5 Otherwise, main fs operation is single-threaded.
6 Could multi-thread the rest but would have to lock the
7 cache properly first.
8 
9 Right now, only one upload at a time.
10 Could have more by kicking off multiple
11 uploader procs.
12 
13 * Implement subcategories.
14 
15 * Implement renames of categories.
16 
17 * Implement renames of albums.
18 
19 * Implement album settings file.
20 
21 * Implement image settings file.
22