# Changes
## [0.9.1] - 2022-11-17
* v5: allow omitting properties length if it is 0 in packets without payload regardless of reason code or its presence.
## [0.9.0] - 2022-11-01
* Rename `Level` to `TopicFilterLevel` for better spec compliance
* v5: Use correct reason code for MaxQosViolated error #117
## [0.9.0-b.2] - 2022-10-28
* v3/v5: MqttSink::ready() is not ready until CONNACK get sent to peer
## [0.9.0-b.1] - 2022-10-17
* Remove deprecated methods
## [0.9.0-b.0] - 2022-10-10
* Renamed Topic into TopicFilter, TopicError into TopicFilterError
* Changes to topic filter validation: levels starting with `$` are allowed at any level and are recognized as system
only at first position
* Changes to topic matching logic: when topic filter is matched against another topic filter via TopicFilter.match_filter(),
left hand side topic filter must be strict superset of all topics allowed with topic filter on right hand side
* Changes to topic matching logic: having `+/#` in the end of topic filter does not wrongly recover failed match on `+` level
* Validation is now part of TopicFilter instantiation, e.g. it is impossible to create non-validated topic filter from
set of Levels.
* Level API is removed completely as level itself is not a valuable concept.
## [0.8.11] - 2022-10-07
* v3/v5: Allow to create `PublishBuilder` with predefined Publish packet
* v3: Allow to specify max allowed qos for server publishes
* v5: Check max qos violations in server dispatcher
## [0.8.10] - 2022-09-25
* Add .into_inner() client's helper for publish control message
## [0.8.9] - 2022-09-16
* v3: Send disconnect packet on sink close
* v3: Treat disconnect packet as error on client side
## [0.8.8] - 2022-08-22
* Allow to get inner io stream and codec for negotiated clients
* Remove inflight limit for client's control service
* v3: Add Debug trait for client's ControlMessage
## [0.8.7] - 2022-06-09
* v5: Encoding missing will properties: will_delay_interval_sec, is_utf8_payload, message_expiry_interval, content_type, response_topic, correlation_data, user_properties
## [0.8.6] - 2022-05-05
* v5: Account for property type byte in property length when encoding Subscribe packet
* v5: Add Router::finish() helper method, it converts router to service factory
* v3/v3: Clearify session type for Router
## [0.8.5] - 2022-04-20
* v3: Make topic generic type for MqttSink::publish() method
* v5: Correct receive max value for v5 connector when broker omits value #100
## [0.8.4] - 2022-03-14
* Add support in-flight messages size back-pressure
* Refactor handshake timeout handling
* Add serializer and deserializer derive (#89)
* Correct spelling of SubscribeAckReason::SharedSubsriptionNotSupported and DisconnectReasonCode::SharedSubsriptionNotSupported (#93)
* Removed PubAckReason::ReceiveMaximumExceeded as this error code is only valid for DISCONNECT packets (#95)
* Update subs.rs example to use confirm instead of subscribe (#97)
## [0.8.3] - 2022-01-10
* Cleanup v3/v5 client connectors
## [0.8.2] - 2022-01-04
* Optimize compilation times
## [0.8.1] - 2022-01-03
* Cleanup MqttError types
## [0.8.0] - 2021-12-30
* Upgrade to ntex 0.5.0
## [0.8.0-b.6] - 2021-12-30
* Update to ntex-io 0.1.0-b.10
## [0.8.0-b.5] - 2021-12-28
* Shutdown io stream after failed handshake
## [0.8.0-b.4] - 2021-12-27
* Use IoBoxed for all server interfaces
## [0.8.0-b.3] - 2021-12-27
* Upgrade to ntex 0.5 b4
## [0.8.0-b.2] - 2021-12-24
* Upgrade to ntex-service 0.3.0
## [0.8.0-b.1] - 2021-12-22
* Better handling for io::Error
* Upgrade to ntex 0.5.0-b.2
## [0.8.0-b.0] - 2021-12-21
* Upgrade to ntex 0.5
## [0.7.7] - 2021-12-17
* Wait for close control message and inner services on dispatcher shutdown #78
* Use default keepalive from Connect packet. #75
## [0.7.6] - 2021-12-02
* Add memory pools support
## [0.7.5] - 2021-11-04
* v5: Use variable length byte to encode the subscription ID #73
## [0.7.4] - 2021-10-29
* Expose some control plane type constructors
## [0.7.3] - 2021-10-20
* Do not poll service for readiness if it failed before
## [0.7.2] - 2021-10-01
* Serialize control message handling
## [0.7.1] - 2021-09-18
* Allow to extract error from control message
## [0.7.0] - 2021-09-17
* Update ntex to 0.4
## [0.7.0-b.10] - 2021-09-07
* v3: add ControlMessage::Error and ControlMessage::ProtocolError
## [0.7.0-b.9] - 2021-09-07
* v5: add helper methods to client control publish message
## [0.7.0-b.8] - 2021-08-28
* use new ntex's timer api
## [0.7.0-b.7] - 2021-08-16
* v3: Boxed Packet::Connect to trim down Packet size
* v5: Boxed Packet::Connect and Packet::ConnAck variants to trim down Packet size
## [0.7.0-b.6] - 2021-07-28
* v3/v5: Fixed nested with_queues calls in sink impl
## [0.7.0-b.5] - 2021-07-15
* v3/v5: PublishBuilder::send_at_least_once initiates publish synchronously
* v3/v5: Publish::take_payload() replaces payload with empty bytes, returns existing
## [0.7.0-b.4] - 2021-07-12
* v3: avoid nested borrow_mut() calls in sink on puback mismatch
## [0.7.0-b.3] - 2021-07-04
* Re-export ClientRouter, SubscribeBuilder, UnsubscribeBuilder
## [0.7.0-b.2] - 2021-06-30
* v3: Remove special treatment for "?" in publish's topic
## [0.7.0-b.1] - 2021-06-27
* Upgrade to ntex-0.4
## [0.6.9] - 2021-06-17
* Use `Handshake<Io>` instead of `codec::Connect` for selector
## [0.6.8] - 2021-06-17
* Add coonditional mqtt server selector
## [0.6.7] - 2021-05-17
* Process unhandled data on disconnect #51
* Fix for panic while parsing MQTT version #52
## [0.6.6] - 2021-04-29
* v5: Fix reason string encoding
* v5: Allow to set reason and properties to SUBACK
## [0.6.5] - 2021-04-03
* v5: Add a `packet()` function to `Subscribe` and `Unsubscribe`
* upgrade ntex, drop direct futures dependency
## [0.6.4] - 2021-03-15
* `HandshakeAck::buffer_params()` replaces individual methods for buffer sizes
## [0.6.2] - 2021-03-04
* Allow to override io buffer params
## [0.6.1] - 2021-02-25
* Cleanup dependencies
## [0.6.0] - 2021-02-24
* Upgrade to ntex v0.3
## [0.5.0] - 2021-02-21
* Upgrade to ntex v0.2
## [0.5.0-b.5] - 2021-01-25
* Upgrade to ntex v0.2-b.7
## [0.5.0-b.4] - 2021-01-23
* Use ntex v0.2-b.5 framed types
## [0.5.0-b.3] - 2021-01-21
* v5: Flush io stream before disconnect
## [0.5.0-b.2] - 2021-01-20
* v5: Restore `set_properties` sink method
## [0.5.0-b.1] - 2021-01-19
* Use ntex 0.2
## [0.4.7] - 2021-01-13
* v5: Add ping and disconnect support to default control service
## [0.4.6] - 2021-01-12
* Use pin-project-lite instead of pin-project
## [0.4.5] - 2021-01-12
* v5: Check publish service readiness error
* io: Fix potential BorrowMut error in io dispatcher
## [0.4.4] - 2021-01-09
* Fix public re-exports
## [0.4.3] - 2021-01-09
* Fix out of bounds panic
## [0.4.2] - 2021-01-05
* Better read back-pressure support
## [0.4.1] - 2021-01-04
* Use ashash instead on fxhash
* Drop unneeded InOrder service usage
## [0.4.0] - 2021-01-03
* Refactor io dispatcher
* Rename Connect/ConnectAck to Handshake/HandshakeAck
## [0.3.17] - 2020-11-04
* v5: Allow to configure ConnectAck::max_qos value
## [0.3.16] - 2020-10-28
* Do not print publish payload in debug fmt
* v5: Create topic handlers on firse use
## [0.3.15] - 2020-10-20
* v5: Handle "Request Problem Information" flag
## [0.3.14] - 2020-10-07
* v3: Fix borrow error in sink impl
## [0.3.13] - 2020-10-07
* Allow to set packet id for sink operations
## [0.3.12] - 2020-10-05
* v5: Add helper method Connect::fail_with()
* v5: Better name SubscribeIter::confirm()
## [0.3.11] - 2020-09-29
* v5: Fix borrow error in MqttSink::close_with_reason()
## [0.3.10] - 2020-09-22
* Add async fn `MqttSink::ready()` returns when there is available client credit.
## [0.3.9] - 2020-09-18
* `ControlMessage` (v3/v5) and referenced types have `#[derive(Debug)]` added
* Add `Deref` impl for `Session<_>`
* v5: Do not override `max_packet_size`, `receive_max` and `topic_alias_max`
## [0.3.8] - 2020-09-03
* Fix packet ordering
* Check default router service readiness
* v5: Fix in/out bound frame size checks in codec
## [0.3.7] - 2020-09-02
* v5: Add PublishBuilder::set_properties() helper method
* v3: Fix PublishBuilder methods
## [0.3.6] - 2020-09-02
* v5: Add Error::ack_with() helper method
## [0.3.5] - 2020-08-31
* v3: New client api
* v5: New client api
* v5: Send publish packet returns ack or publish error
## [0.3.4] - 2020-08-14
* v5: set `max_qos` to `AtLeastOnce` for server `ConnectAck` response
* v5: do not set `session_expiry_interval_secs` prop
## [0.3.3] - 2020-08-13
* v5: do not convert publish error to ack for QoS0 packets
## [0.3.2] - 2020-08-13
* v5: Handle packet id in use for publish, subscribe and unsubscribe packets
* v5: Handle 16 concurrent control service requests
* v3: Handle packet id in use for subscribe and unsubscribe packets
* v3: Handle 16 concurrent control service requests
* Removed ProtocolError::DuplicatedPacketId error
## [0.3.1] - 2020-08-12
* v5: Fix max inflight check
## [0.3.0] - 2020-08-12
* v5: Add topic aliases support
* v5: Forward publish errors to control service
* Move keep-alive timeout to Framed dispatcher
* Rename PublishBuilder::at_most_once/at_least_once into send_at_most_once/send_at_least_once
* Replace ConnectAck::properties with ConnectAck::with
## [0.2.1] - 2020-08-03
* Fix v5 decoding for properties going beyond properties boundary
## [0.2.0] - 2020-07-28
* Fix v5 server constraints
* Add v3::Connect::service_unavailable()
* Refactor Topics matching
## [0.2.0-beta.2] - 2020-07-22
* Add Publish::packet_mut() method
## [0.2.0-beta.1] - 2020-07-06
* Add mqtt v5 protocol support
* Refactor control packets handling
## [0.1.3] - 2020-05-26
* Check for duplicated in-flight packet ids
## [0.1.2] - 2020-04-20
* Update ntex
## [0.1.1] - 2020-04-07
* Add disconnect timeout
## [0.1.0] - 2020-04-01
* For to ntex namespace
## [0.2.3] - 2020-03-10
* Add server handshake timeout
## [0.2.2] - 2020-02-04
* Fix server keep-alive impl
## [0.2.1] - 2019-12-25
* Allow to specify multi-pattern for topics
## [0.2.0] - 2019-12-11
* Migrate to `std::future`
* Support publish with QoS 1
## [0.1.0] - 2019-09-25
* Initial release