Test restarting client after getting excluded

[Powersource]

Fixes https://github.com/ssbc/ssb-tribes2/issues/90

[socket-security[bot]]

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👍 No new dependency issues detected in pull request

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Pull request alert summary

Issue	Status
Install scripts	✅ 0 issues
Native code	✅ 0 issues
Bin script shell injection	✅ 0 issues
Unresolved require	✅ 0 issues
Invalid package.json	✅ 0 issues
HTTP dependency	✅ 0 issues
Git dependency	✅ 0 issues
Deprecated license	✅ 0 issues
Missing license	✅ 0 issues
Potential typo squat	✅ 0 issues
Known Malware	✅ 0 issues
Telemetry	✅ 0 issues
Protestware/Troll package	✅ 0 issues

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📊 Modified Dependency Overview:

⬆️ Updated Package	Version Diff	Added Capability Access	+/- Transitive Count	Publisher
ssb-box2@7.0.0	6.2.0...7.0.0	None	+0/-0

[mixmix]

I love reading nice clear tests.

I don't know what your code changed that means it behaves differently, but it's passing tests so :+1: :heart: :horse:

[Powersource]

the big/only change is in box2/keyring, where we now keep the readKeys and root. we do that because we ran into a bug when adding these tests (specifically when the client was start()ing back up again. the last few tests for list() etc are just for stability/sanity checking, i thought they might be failing but they weren't, so that's nice