scrape hidden letters about ltc HOT 2 CLOSED

Found API endpoint for directly acessing letters, see https://github.com/boehs/ltc/blob/master/toolkit/endpoints.md

in progress as of 0a8532e

from ltc.

completed as of 9b41b8e

Statistics

• increase of 97756 letters
• 32693 letters were "hidden", either by a mod or the author
• 2314 letters were "feedback" for the moderators and not meant to be public
• 62749 letters were perplexingly missed from the batch archival, possibly from human (my) error
  • I do know 700 of the very first letters aren't returned from the API, unclear why but
  • all are there now, with no data loss
• 1529 letters were lost forever, perhaps deleted permanently from the source database

from ltc.