TODO

   1 - [ ] Convert to Typed Racket
   2   - requires: build executable (otherwise too slow)
   3 - [ ] Build executable
   4   - requires: fix of "collection not found" when executing the built executable
   5     outside the source directory:
   6
   7     collection-path: collection not found
   8       collection: "tt"
   9       in collection directories:
  10       context...:
  11        /usr/share/racket/collects/racket/private/collect.rkt:11:53: fail
  12        /usr/share/racket/collects/setup/getinfo.rkt:17:0: get-info
  13        /usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt:555:3
  14        /usr/share/racket/collects/racket/cmdline.rkt:191:51
  15        '|#%mzc:p
  16
  17 - [ ] Support redirects
  18   - should permanent redirects update the feed somehow?
  19 - [ ] Support time ranges (i.e. reading the timeline between given time points)
  20 - [ ] Implement rfc3339->epoch and remove dependency on rfc3339-old
  21 - [ ] remove dependency on http-client
  22 - [ ] optional text wrap
  23 - [ ] write
  24 - [x] caching (use cache by default, unless explicitly asked for update)
  25   - [x] value --> cache
  26   - [x] value <-- cache
  27     requires: d command
  28 - [ ] timeline limits
  29 - [ ] feed set operations (perhaps better done externally?)
  30 - [ ] timeline as a result of a query (feed set op + filter expressions)
  31 - [ ] named timelines
  32 - [ ] config files
  33 - [ ] parse "following" from feed
  34   - following = <nick> <uri>
  35 - [ ] parse mentions:
  36   - @<source.nick source.url> | @<source.url>
  37 - [ ] highlight mentions
  38 - [ ] filter on mentions
  39 - [ ] highlight hashtags
  40 - [ ] filter on hashtags
  41 - [ ] hashtags as channels? initial hashtag special?
  42 - [ ] query language
  43 - [ ] console logger colors by level ('error)
  44 - [ ] file logger ('debug)
  45 - [-] commands:
  46   - [x] r | read
  47     - see timeline ops above
  48   - [ ] w | write
  49     - arg or stdin
  50     - nick expand to URI
  51   - [ ] q | query
  52     - see timeline ops above
  53     - see hashtag and channels above
  54   - [x] d | download
  55   - [x] u | upload
  56     - calls user-configured command to upload user's own feed file to their server
  57   Looks like a better CLI parser than "racket/cmdline": https://docs.racket-lang.org/natural-cli/
  58   But it is no longer necessary now that I've figured out how to chain (command-line ..) calls.
  59 - [ ] Suport immutable timelines
  60     - store individual messages (possibly in something like DBM or SQLite)