- Split IndexHandler into HealthHandler, VersionHandler, and CharacterHandler
- Rename index.go to version.go in backend
- Change VersionData.Changelog from string to []string
- Add changelog entries for issues #16-#23
- Remove TestDB function and related code
- Fix import ordering in several files
Closes#21, #22
References #16, #17, #18, #19, #20, #23
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Co-Authored-By: Mistral Vibe <vibe@mistral.ai>