typing: add some type hints to fastannotate that have decayed in the last year...
typing: add some type hints to fastannotate that have decayed in the last year
Somewhere since 10db46e128d4, `_knownopts` decayed to `set` for unknown reasons.
Also, `annotateopts.default` changed from bytes to str. While that is correct,
I noticed that PyCharm was flagging the member fields as undefined in
`shortstr()`, so add those to keep it happy. (There are no complaints from
pytype because that module is excluded, due to the missing reference to
`linelog.copyfrom()` that I'm not sure how to fix.)
