docs(releasing): minor updates

[paulirish]

update: see #5345 (comment)

[brendankenny]

I apparently missed when we started npmignoring smokehouse. We need to be sure we aren't shipping something buggy, so it seems like this needs to be one of

• don't npmignore smokehouse. It's not that big, and if it somehow is we could do something like just include a subset with that don't have large local files
• write a test to automate testing a gzipped lighthouse package
• include a checklist here of expected audit results for paulirish.com and example.com so we verify that it's not only running but that it's running correctly

[brendankenny]

wait, it's still not ignored?

lighthouse/.npmignore

Line 23 in 520f9ac

!lighthouse-cli/test/smokehouse

[paulirish]

@brendankenny blast from the past. ;)

changes

• lighthouse-core/scripts wasn't ignored correctly. their syntax is odd if you want most files in a dir ignored but one allowed. this works though.
• keep all of lighthouse-cli/tests. most notably all the fixtures to support smokehouse
• ignore latest-run
• remove mentions of yarn smokehouse since that died here.
• remove the "drive-by-tightening" that doesnt seem to help and actually prevents the npm explore lighthouse -- npm run smoke from working.

[brendankenny]

🌬️LGTM!

[brendankenny]

how much bigger does our package end up?

[paulirish]

oh this was not fun. turns out yarn pack builds things VERY differently than npm pack.
and npm pack gives basically the same package before and after this PR. wonderful.

[paulirish]

turns out it's smaller now. because the npmignore in master includes all of lighthouse-cli already.

so aint that somethin