* First pass at adding comment trees.
- Extracted comment replies into its own table.
- Added ltree column to comment
- Added parent_id param to GetComments to fetch a tree branch
- No paging / limiting yet
* Adding child_count to comment_aggregates.
* Adding parent comment update counts
* Fix unit tests.
* Comment tree paging mostly done.
* Fix clippy
* Fix drone tests wrong postgres version.
* Fix unit tests.
* Add back in delete in unit test.
* Add postgres upgrade script.
* Fixing some PR comments.
* Move update ltree into Comment::create
* Updating based on comments.
* Fix send soft fail.
* Create example for apub lib
* some rewriting of apub lib
* Add LocalInstance struct for apub lib to avoid using Lemmy Settings
* Move ActorType trait to lemmy_apub, because its not needed in library
* Use reqwest_retry instead of custom impl, dont specify timeout on every send()
* Some improvements to example
* Moved inbox handling to library
* bug fixes
* Move context and serde helpers into library
* wip: example changes
* Add lemmy_utils feature to build only LemmyError
* Rename to activitypub_federation
* Remove lemmy_utils dep from activitypub_federation using generic error type
* Finish activitypub example
* Cleanup and fix tests
* Reorganize library files
* Remove ApubObject.to_tombstone()
* Extract activitypub library into separate git repository
* Respond directly with LemmyError
Instrument Perform implementations for more precise traces
Use ApiError to format JSON errors when messages are present
Keep SpanTrace output in LemmyError Display impl
* Hide SpanTrace debug output from LemmyError
* Don't log when entering spans, only when leaving
* Update actix-web
* Update actix-rt
* Add newline after error info in LemmyError Display impl
* Propogate span information to blocking operations
* Instrument apub functions
* Use skip_all for more instrument attributes, don't skip 'self' in some api actions
* Make message a static string
* Send proper JSON over websocket
* Add 'message' to LemmyError display if present
* Use a quieter root span builder, don't pretty-print logs
* Keep passwords and emails out of logs
* Re-enable logging Login
* Instrument feeds
* Emit our own errors
* Move error log after status code recording
* Make Sensitive generic over the inner type
* Remove line that logged secrets
