Handle WebMeUp bots (BLEXBot)

[gabrieljablonski]

BLEXBot is a crawler that is responsible for a good chunk of bot requests on a website I manage (>200k requests over multiple IPs), so handling it with legitbot seems like a good idea.

The bot specs are available here: http://webmeup-crawler.com/

Let me know if any changes are needed.

[gabrieljablonski]

Btw, sorry for spamming PRs.

I'm going over some IP addresses that are littering user tracking in my project, so I'm submitting for each of the top crawler bots that aren't already covered by legitbot.

This should be the last one for now. Thanks!

[alaz]

Btw, sorry for spamming PRs.

No, no, your PRs are perfect. I do prefer to have separate commits for bots.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.77%. Comparing base (13d53f6) to head (e5ad758). Report is 1 commits behind head on master.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #158 +/- ## ========================================== + Coverage 98.75% 98.77% +0.02% ========================================== Files 25 26 +1 Lines 240 245 +5 ========================================== + Hits 237 242 +5 Misses 3 3 ```

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[alaz]

This should be the last one for now

I am a bit tied up at the moment, but will make a release this weekend latest.

[gabrieljablonski]

I am a bit tied up at the moment, but will make a release this weekend latest.

No worries. Thanks for taking a look so quickly!