3.0.0a4

What's Changed

• fix: server transport always accept text/plain by @gjedlicska in #382
• add region class and tests by @KatKatKateryna in #393
• fix (specklepy): removes avatar in version string representation by @dogukankaratas in #395
• Update config.yml by @JR-Morgan in #399
• gergo/nostringcase by @gjedlicska in #398
• feat(specklepy): curve object class by @dogukankaratas in #400

Full Changelog: 3.0.0a3...3.0.0a4