This doesn’t seem to add any noise in the normal case, but if anything
shows up here we might want to see it.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
- Add scrapy project with rewrited 'crawl' command and spider to check documentation.
Command was rewrited due to return exit status by the exception existing,
it returns exit code 0 if exception happens inside spider in standard behavour.
- Add scrapy requirements to for dev environment. It was added to twisted requirements list.
Fixes#1492
