v0.4.0

There are too many changes after v0.3.0 – mainly the structure adjustment, sqlrunner optimization, the email sending.

What's Changed

• fix(challenge): Incorrect title of diff results by @pan93412 in #94
• Maintainance (2024-11-27) by @pan93412 in #95
• Iteration 2024-12-02 by @pan93412 in #96
• app-sf-46: Add email infrastructure by @pan93412 in #98
• improve statistics by @pan93412 in #100
• Code improvement by @pan93412 in #101
• Admin Panel fixes & deprecation fixes by @pan93412 in #102
• send login email by @pan93412 in #103
• Clean up codebase by @pan93412 in #104
• Fix test-email preview & sending by @pan93412 in #105
• Fix GitHub issue #60 by @pan93412 in #106
• Upgrade dependencies by @pan93412 in #107
• fix(command): Group and Roles can be null by @pan93412 in #108
• fix(command): Make "roles" optional by @pan93412 in #109

Full Changelog: v0.3.0...v0.4.0