* Make code execution time logs shorter
* Do ZK parameter preloads in the lightwalletd tests that need them
* Try to re-launch `lightwalletd` when it hangs during sync tests
* Increase full sync timeout
* Clear the `zebrad` logs during `lightwalletd` tests, to avoid logging deadlocks
* Actually clear more than one line of logs
* Check zebrad and lightwalletd output in parallel threads, while waiting for zebrad
* Check zebrad and lightwalletd output in parallel threads, while waiting for lightwalletd
* Improve test logging
* Fix a log typo
* Only wait for lightwalletd once, because its logs stop after the initial sync
* Look for cached state disks for this commit and branch first
* Only copy the state once in the send transactions test
* Wait longer for lightwalletd gRPC server startup
* Add some function docs
* cargo fmt --all
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