chore: bump version to 0.6.0 and add CHANGELOG

Version 0.6.0 Release:

Major Features:
- Deferred reply pattern for GenServer (Erlang-style noreply)
- Selective receive with pattern matching (Erlang-style receive)

Breaking Changes:
- GenServer::handle_call now returns CallResponse<T>

Changes:
- Bumped version from 0.5.0 to 0.6.0 in workspace Cargo.toml
- Updated joerl_macro dependency to 0.6.0
- Created comprehensive CHANGELOG.md following Keep a Changelog format

The CHANGELOG documents:
- All new features with detailed descriptions
- Breaking changes with migration guide
- Examples and documentation updates
- Technical implementation details
- Version comparison links

Author: am-kantox

CHANGELOG.md

@@ -0,0 +1,95 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.6.0] - 2025-12-10
+
+### Added
+
+- **Deferred Reply Pattern for GenServer** - Full Erlang-style deferred reply support
+  - Added `CallResponse<T>` enum with `Reply(T)` and `NoReply` variants
+  - Implemented `ReplyHandle<T>` for sending deferred replies asynchronously
+  - Server can now accept requests, return immediately, and reply later when work completes
+  - Multiple concurrent deferred calls supported
+  - Matches Erlang's `{noreply, State}` and `gen_server:reply/2` semantics exactly
+  - Breaking change: `GenServer::handle_call` now returns `CallResponse<Self::CallReply>` instead of `Self::CallReply`
+  
+- **Selective Receive** - Erlang-style pattern matching for messages
+  - Added pending queue (`Mutex<VecDeque<Envelope>>`) to `Mailbox` for non-matching messages
+  - Implemented `recv_matching()` with timeout support
+  - Implemented `try_recv_matching()` for non-blocking selective receive
+  - Added three public methods to `ActorContext`:
+    - `receive(predicate)` - Wait indefinitely for matching message
+    - `receive_timeout(predicate, timeout)` - Wait with timeout
+    - `try_receive(predicate)` - Non-blocking check
+  - Non-matching messages saved to pending queue and checked first on subsequent receives
+  - Maintains message ordering through `VecDeque`
+  - Perfect for RPC patterns with correlation IDs
+  
+- **Examples**
+  - `gen_server_deferred_reply.rs` - Job processor demonstrating async work with deferred replies
+  - `actor_selective_receive.rs` - RPC client/server with correlation IDs using selective receive
+  
+- **Documentation**
+  - Updated `GETTING_STARTED.md` with comprehensive deferred reply and selective receive sections
+  - Updated `GETTING_STARTED_RU.md` with full Russian translations
+  - Added code examples, benefits, use cases, and Erlang mappings
+  - Updated example lists in both English and Russian guides
+
+### Fixed
+
+- Resolved clippy warnings in `actor_selective_receive` example
+- Removed unused `monitored` field from `MonitorActor` struct
+- Collapsed nested if statements using let-chain patterns
+
+### Changed
+
+- **Breaking**: `GenServer::handle_call` signature changed to return `CallResponse<Self::CallReply>`
+  - Migration: wrap existing returns in `CallResponse::Reply(value)`
+  - Example: `state.value` → `CallResponse::Reply(state.value)`
+
+### Technical Details
+
+- Deferred reply uses `tokio::spawn` for async work without blocking the server
+- Selective receive uses `Mutex<VecDeque<Envelope>>` for thread-safe pending queue
+- Predicates use `FnMut(&Message) -> Option<T>` for flexible pattern matching
+- Timeout support via `tokio::time::timeout_at`
+- All new features include comprehensive test suites (12 new tests total)
+- All tests passing, code formatted, clippy clean
+
+## [0.5.0] - 2024-12-09
+
+### Added
+
+- Comprehensive Getting Started guides in English and Russian
+- Property-based testing with QuickCheck for improved reliability
+- Distributed system metrics for telemetry
+- Unified `ActorSystem` with transparent distributed support
+- Location-transparent messaging (same API for local and remote actors)
+- Remote messaging support with full RPC capabilities
+- Ping/pong RPC for remote `is_process_alive()`
+- Handshake protocol for bidirectional connections
+- EPMD (Erlang Port Mapper Daemon) client and server implementation
+- Custom telemetry providers support
+- Memory tracking for actors and mailboxes
+
+### Changed
+
+- Deprecated `DistributedSystem` in favor of `ActorSystem::new_distributed()`
+- Cleaned up CI verbosity and deprecated struct documentation
+- Migrated to unified ActorSystem architecture
+
+### Fixed
+
+- Resolved clippy warnings in distributed.rs
+- Various documentation consistency improvements
+
+## Earlier Versions
+
+For earlier version history, see the git commit log.
+
+[0.6.0]: https://github.com/am-kantox/joerl/compare/v0.5.0...v0.6.0
+[0.5.0]: https://github.com/am-kantox/joerl/compare/v0.4.0...v0.5.0

Cargo.toml

@@ -3,7 +3,7 @@ members = ["joerl", "joerl_macro"]
 resolver = "2"
 
 [workspace.package]
-version = "0.5.0"
+version = "0.6.0"
 edition = "2024"
 authors = ["Aleksei Matiushkin <am@ambment.cat>"]
 license = "MIT"

joerl/Cargo.toml

@@ -19,7 +19,7 @@ async-trait = "0.1"
 dashmap = "6.1"
 parking_lot = "0.12"
 futures = "0.3"
-joerl_macro = { version = "0.5.0", path = "../joerl_macro" }
+joerl_macro = { version = "0.6.0", path = "../joerl_macro" }
 bincode = "1.3"
 serde = { version = "1.0", features = ["derive"] }
 once_cell = "1.20"