v0.2.0

Changelog

• 8c05453 Add global --dry-run support for previewing configuration changes
• 1f44ff6 Add support for removing configs with associated SSH keys
• e8180b0 Enhance configuration management: introduce atomic file writes, content validation, and duplicate Host alias detection
• a976da7 Fix backup logic, ensure configurations retain formatting, and sort ListConfigs output
• 87d7a9a Improve config validation: allow wildcard host without hostname, refine space detection in quoteIfSpace, and ensure case-insensitive Host alias comparison
• 0dcc704 Refactor file handling: centralize atomic write logic in fileutil package and update references across the codebase
• 5e0fc4d Remove 'Modern Go' feature from README