Telegram crawl depth does not go higher than 1 even if something else is entered

[stijn-uva]

What it says on the tin

[dale-wahl]

Two things I noticed:
if crawl_max_depth and (not crawl_msg_threshold or depth_map.get(query) < crawl_msg_threshold): looks off. I think something like if crawl_max_depth and (depth_map.get(query) < crawl_max_depth): is sufficient at this point and the crawl_msg_threshold comes into play later on individual fwd_from channels/groups/etc. Likely just misnamed variable that seemed to work under the right circumstances.

Second part looks like the serialized_message.get("fwd_from") structure may have changed (at least the examples I am finding would never trigger the code as is).

I will send a PR though and am testing now. I can certainly get it crawling, but you may want to take a look to come up with what you want to crawl. I seem to have unleashed something...

[dale-wahl]

#444