v0.9.0

Breaking changes

• Error handling: All access methods now return Result<T> instead of mixed Option<T>/Result<T> patterns
• Error types: Changed from anyhow::Error to structured BgpkitCommonsError enum with specific error variants
• Dependencies: Removed anyhow dependency completely - now using only thiserror 2.0 for error handling

Feature flags

• Added individual feature flags for each module (asinfo, as2rel, bogons, countries, mrt_collectors, rpki)
• Made all dependencies optional except thiserror - dependencies are only compiled when their respective features are
  enabled
• Added all convenience feature that enables all modules (set as default for backwards compatibility)
• Removed native-tls and rustls feature flags - oneio now uses rustls by default
• Updated GitHub Actions workflow to test all feature combinations

Bug fixes

• Fixed RPKI module to properly handle multiple ROAs for the same prefix
• Added duplicate prevention for ROAs based on (prefix, asn, max_length) triplet
• Enhanced RPKI module documentation with multiple ROAs support details

Code improvements

• Cleaned up lib.rs by using full paths instead of feature-gated imports
• Enhanced CI testing with comprehensive feature combination validation
• Significantly improved lib.rs documentation with comprehensive usage examples
• Added feature flag documentation and minimal build examples
• Enhanced module descriptions with clear feature requirements
• Updated lib.rs with detailed functionality descriptions including load methods, access methods, data sources, and
  capabilities for each module
• Standardized error handling across all modules - all access methods now return Result<T> with clear error messages
  instead of mixed Option<T> and Result<T> patterns
• Unified error message format across all modules with consistent "Data not loaded. Call load_xxx() first." pattern
• Added LazyLoadable trait interface for consistent reloading and status checking across all data modules
• Added loading_status() method to BgpkitCommons for inspecting which modules are currently loaded
• Replaced anyhow with thiserror for structured error handling - introduced BgpkitCommonsError with specific error types
  for module loading failures, data source errors, and invalid formats
• Added comprehensive error constants and helper methods for consistent error creation across modules
• Eliminated all anyhow! macro calls in favor of structured error types with specific context and guidance
• Added From implementations for common parsing errors (ParseIntError, ParseFloatError) to support automatic error
  conversion
• Successfully removed anyhow dependency completely - now using only thiserror 2.0 for all error handling