0.4.0 - 2026-07-27

Replaced the unmaintained rocksdb 0.24 binding with maintained rust-rocksdb 0.51, bundling RocksDB 11.1.2.
Bound the established ExRocket API directly to the maintained native backend.
Removed the duplicate legacy Rust crate, temporary migration module, duplicate tests, and release artifacts after the unchanged legacy test suite passed against the new backend.
Added representative bidirectional RocksDB 10.4.2/11.1.2 migration checks.
Raised the source-build requirement to Rust 1.91.

0.3.1

Dependencies: Upgraded rust-rocksdb from 0.22.0 to 0.24.0
- Latest RocksDB features and performance improvements
- Enhanced stability and bug fixes from upstream
Build Requirements: Updated minimum Rust version to 1.85+
- Required for rust-rocksdb 0.24.0 compatibility
- Ensures access to latest Rust compiler optimizations
CI/CD Improvements: Added comprehensive caching to GitHub Actions
- Mix dependencies caching for faster builds
- Rust/Cargo dependencies caching
- Build artifacts caching for improved CI performance
- Updated actions to latest versions (@v4)
Added comprehensive RocksDB merge operator support
- Three merge operators: counter, erlang term, and bitset
- Support for tuple-based operations: {:int_add, value}, {:list_append, list}, {:binary_append, data}, etc.
- Column family merge operations with merge_cf/4 and merge_cfb/4
Added binary helper functions for ETF serialization
- getb/2 and get_cfb/3 for automatic term deserialization
- mergeb/3 and merge_cfb/4 for automatic term serialization
NEW: Merge operations support in batch writes
- Added {:merge, key, operand} and {:merge_cf, cf, key, operand} to write_batch/2
- Atomic batch operations combining puts, deletes, and merges
Added comprehensive cheatsheet documentation (CHEATSHEET.md)
Complete test coverage for all merge operations