v0.1.0-beta.3

Added

• Core data types and traits for Links Platform
• LinkType trait for numeric link identifiers
• Links trait for CRUD operations on doublet links storage
• Flow type for iteration control (Continue/Break)
• Query wrapper with copy-on-write semantics
• Point structure for repeating elements
• Hybrid type for internal/external link references
• LinksConstants for storage configuration
• AddrToRaw / RawToAddr converters