Add the Expires directive for easylist-chat

[partingscientist]

Currently, the list does not have it. I would assume this is not intentional, and the list would be updated every 4 days if my memory of the implementation is correct. Making it consistent with the other annoyances lists (7 days) is probably not a bad idea.

[Yuki2718]

every 4 days

5 days if no directive

[ghost]

a763488 ?

[ghost]

Why it was removed? @gorhill ?

[ghost]

Hmmm, second header down below https://github.com/uBlockOrigin/uAssets/blame/ef88591a650732c5f719f42bea2ca2d30bcfc7ed/thirdparties/easylist/easylist-chat.txt#L19

[ghost]

Only the last line of the template_header.txt is included?

[ghost]

Three weeks ago header start to be trimmed f05512e#diff-18b417cd52de8250785338e6f28432d5ce6a5dd54e44342b3c65d06c664c887dR130-R137

It seem the regex is not perfect.

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Need a break, my eyes hurt.

[gorhill]

Why it was removed?

I don't remember, might be just an oversight.