**Enhancements**
- add structure creators for `ASE`, `GASP`, `PyXtal`, `AIRSS`, `CALYPSO`, `USPEX`, and `XtalOpt` as well as documentation for creators.
- add `simmate version` command
- changelog and update guide added to documentation website
- add `show-stats`, `delete-finished`, and `delete-all` commands to `workflow-engine`
- add `Cluster` base class + commands that allow submitting a steady-state cluster via subprocesses or slurm
- add `started_at`, `created_at`, `total_time`, and `queue_time` columns to `Calculation` tables
- add `exlcude_from_archives` field to workflows to optionally delete files when compressing outputs to zip archives
- various improvements added for evolutionary search workflows, such as parameter optimization, new output files, and website views
- add `Fingerprint` database table and integrate it with `Fingerprint` validator
- support >2 element hull diargrams and complex chemical systems
**Refactors**
- optimize `get_series` method of `relaxation.vasp.staged`
- reorganize `selectors` module for evolutionary structure prediction
**Fixes**
- fix dynamic loading of toolkit structures from third-party databases
- fix race condition with workers and empty queues
- increases default query rate for `state.result()` to lessen database load
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