* don't use global for server instance
* it gets shared between tests and causes gcsafe to trigger
* enable `chronosStrictException` in tests
* avoid asynctests dep
* testcommon -> all_tests (like the other projects)
* Remove version pin on chronicles
Caused dependency conflicts when combining websock with other
packages that depend on chronicles, now that chronicles has
a new version (0.10.2).
* Ensure that chronicles version supports isLogFormatUsed