Fungenerators Random Facts is now paid

It is not open-source, it is a paid service.

Add OpenSanctions

add kimiquotes to Personality

resolve #2951

Mailgun only provides a testing tier. When this tier's limit runs out, you'll need to pay to keep using it.

ref: https://www.mailgun.com/pricing/
```
Try us out! Get 5,000 free emails per month for 3 months, then only pay for what you send

Pay As You Grow
```

Moved:
- ImprovMX
- mail.gw
- mail.tm
- MailboxValidator

Removed Wegmans

Removed Wegmans (API no longer open to public)

The alternative site "collective API" is broken.

Removed Yahoo Weather (shutdown June 2021)