* [chore] Remove years from all license headers
Years or year ranges aren't required in license headers. Many projects
have removed them in recent years and it avoids a bit of yearly toil.
In many cases our copyright claim was also a bit dodgy since we added
the 2021-2023 header to files created after 2021 but you can't claim
copyright into the past that way.
* [chore] Add license header check
This ensures a license header is always added to any new file. This
avoids maintainers/reviewers needing to remember to check for and ask
for it in case a contribution doesn't include it.
* [chore] Add missing license headers
* [chore] Further updates to license header
* Use the more common // indentend comment format
* Remove the hack we had for the linter now that we use the // format
* Add SPDX license identifier
* add some announces to test models
* start on announce test logic
* test federatingDB.Announce
* change signature of GetRemoteStatus
* remove 'refresh' logic and replace it with refetch
* go fmt
* remove timeline manager from processor test
* make zork created at determinate
* test get account statuses
* test get + serialize zork
* make account keys determinate
* make admin accountCreate time determinate
* test account to as
* init test config before test log
* test status to frontend
* remove daft Within check
* hack around a bit
* use index of slice
