# 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).

## unreleased

### Added

- `filter_boost_added` and `filter_reply_to_story` filters to the `MessageFilterExt` trait ([PR 1131](https://github.com/teloxide/teloxide/pull/1131))
- `filter_mention_command` filter to the `HandlerExt` trait ([issue 494](https://github.com/teloxide/teloxide/issues/494))
- `filter_business_connection`, `filter_business_message`, `filter_edited_business_message`, and `filter_deleted_business_messages` filters to the `UpdateFilterExt` trait ([PR 1146](https://github.com/teloxide/teloxide/pull/1146))
- Syntax sugar for making requests ([issue 1143](https://github.com/teloxide/teloxide/issues/1143)):
  - `bot.forward`, `bot.edit_live_location`, `bot.stop_live_location`, `bot.set_reaction`, `bot.pin`, `bot.unpin`, `bot.edit_text`, `bot.edit_caption`, `bot.edit_media`, `bot.edit_reply_markup`, `bot.stop_poll_message`, `bot.delete` and `bot.copy` methods to the new `crate::sugar::bot::BotMessagesExt` trait
  - `req.reply_to` method to the new `crate::sugar::request::RequestReplyExt` trait
  - `req.disable_link_preview` method to the new `crate::sugar::request::RequestLinkPreviewExt` trait

### Changed

- Environment bumps: ([PR 1147](https://github.com/teloxide/teloxide/pull/1147))
  - MSRV (Minimal Supported Rust Version) was bumped from `1.70.0` to `1.80.0`
  - Some dependencies was bumped: `sqlx` to `0.8.1`, `tower` to `0.5.0`, `reqwest` to `0.12.7`
  - `tokio` version was explicitly specified as `1.39`

### Fixed

- Now Vec<MessageId> in requests serializes into [number] instead of [ {message_id: number} ], `forward_messages`, `copy_messages` and `delete_messages` now work properly

## 0.13.0 - 2024-08-16

### Added

- Documentation regarding the way captions work for the official clients on `SendMediaGroup` ([PR 992](https://github.com/teloxide/teloxide/pull/992))
- Add `MessageToCopyNotFound` error to `teloxide::errors::ApiError` ([PR 917](https://github.com/teloxide/teloxide/pull/917))
- `Dispatcher::try_dispatch_with_listener` ([PR 913](https://github.com/teloxide/teloxide/pull/913))
- Missing Message::filter_* functions ([PR 982](https://github.com/teloxide/teloxide/pull/982)):
  - `filter_game`
  - `filter_venue`
  - `filter_video`
  - `filter_video_note`
  - `filter_voice`
  - `filter_migration`
  - `filter_migration_from`
  - `filter_migration_to`
  - `filter_new_chat_title`
  - `filter_new_chat_photo`
  - `filter_delete_chat_photo`
  - `filter_group_chat_created`
  - `filter_supergroup_chat_created`
  - `filter_channel_chat_created`
  - `filter_message_auto_delete_timer_changed`
  - `filter_invoice`
  - `filter_successful_payment`
  - `filter_connected_website`
  - `filter_write_access_allowed`
  - `filter_passport_data`
  - `filter_proximity_alert_triggered`
  - `filter_forum_topic_created`
  - `filter_forum_topic_edited`
  - `filter_forum_topic_closed`
  - `filter_forum_topic_reopened`
  - `filter_general_forum_topic_hidden`
  - `filter_general_forum_topic_unhidden`
  - `filter_video_chat_scheduled`
  - `filter_video_chat_started`
  - `filter_video_chat_ended`
  - `filter_video_chat_participants_invited`
  - `filter_web_app_data`
- Implement `PostgresStorage`, a persistent dialogue storage based on [PostgreSQL](https://www.postgresql.org/)([PR 996](https://github.com/teloxide/teloxide/pull/996)).
- Implement `GetChatId` for `teloxide_core::types::{Chat, ChatJoinRequest, ChatMemberUpdated}`.
- Use [deadpool-redis](https://crates.io/crates/deadpool-redis) for Redis connection pooling ([PR 1081](https://github.com/teloxide/teloxide/pull/1081)).
- Add `MessageExt::filter_story` method for the corresponding `MediaKind::Story` variant ([PR 1087](https://github.com/teloxide/teloxide/pull/1087)).
- Add `update_listeners::webhooks::Options::path`, an option to make the webhook server listen on a different path, which can be useful behind a reverse proxy.
- Add `filter_giveaway`, `filter_giveaway_completed`, `filter_giveaway_created` and `filter_giveaway_winners` filters to `MessageFilterExt` trait ([PR 1101](https://github.com/teloxide/teloxide/pull/1101))

### Fixed

- Use `UserId` instead of `i64` for `user_id` in `html::user_mention` and `markdown::user_mention` ([PR 896](https://github.com/teloxide/teloxide/pull/896))
- Greatly improved the speed of graceful shutdown (`^C`) ([PR 938](https://github.com/teloxide/teloxide/pull/938))
- Fix typos in documentation ([PR 953](https://github.com/teloxide/teloxide/pull/953))
- Use `Seconds` instead of `String` in `InlineQueryResultAudio` for `audio_duration` ([PR 994](https://github.com/teloxide/teloxide/pull/994))
- High CPU usage on network errors ([PR 1002](https://github.com/teloxide/teloxide/pull/1002), [Issue 780](https://github.com/teloxide/teloxide/issues/780))
- Fix app build errors when using items gated behind sqlite-storage with the feature sqlite-storage-rustls ([PR 1018](https://github.com/teloxide/teloxide/pull/1018))
- Fix typo in `ApiError::ToMuchMessages` variant (rename it to `TooMuchMessages`) ([PR 1046](https://github.com/teloxide/teloxide/pull/1046))
- Fix `ChatPermission` behavior to accurately reflect Telegram's functionality ([PR 1068](https://github.com/teloxide/teloxide/pull/1068))

### Changed

- MSRV (Minimal Supported Rust Version) was bumped from `1.64.0` to `1.68.0` ([PR 950][https://github.com/teloxide/teloxide/pull/950])
- Sqlx version was bumped from `0.6` to `0.7.3`([PR 995](https://github.com/teloxide/teloxide/pull/995))
- Feature `sqlite-storage` was renamed to `sqlite-storage-nativetls`([PR 995](https://github.com/teloxide/teloxide/pull/995))
- MSRV (Minimal Supported Rust Version) was bumped from `1.68.0` to `1.70.0` ([PR 996][https://github.com/teloxide/teloxide/pull/996])
- `axum` was bumped to `0.7`, along with related libraries used for webhooks ([PR 1093][https://github.com/teloxide/teloxide/pull/1093])
- `Polling`'s exponential backoff now results in 64 seconds maximum delay instead of 17 minutes ([PR 1113][https://github.com/teloxide/teloxide/pull/1113])
- `filter_forward_from` was renamed to `filter_forward_origin` and now returns `MessageOrigin` instead of `ForwardFrom` ([PR 1101](https://github.com/teloxide/teloxide/pull/1101))

### Removed

- `UpdateListener::timeout_hint` and related APIs ([PR 938](https://github.com/teloxide/teloxide/pull/938))

## 0.12.2 - 2023-02-15

### Fixed

- `docs.rs` documentation build

## 0.12.1 - 2023-02-15

### Fixed

- Allow `ChatJoinRequest` updates
- Some example links in documentation

### Added

- `Update::filter_chat_join_request`
- `sqlite-storage-rustls` feature, that allows using sqlite storage without `native-tls`

### Changed

- Updated `teloxide-core` to v0.9.1; see its [changelog](https://github.com/teloxide/teloxide/blob/master/crates/teloxide-core/CHANGELOG.md#091---2023-02-15) for more

## 0.12.0 - 2023-01-17

### Changed

- Updated `teloxide-macros` to v0.7.1; see its [changelog](crates/teloxide-macros/CHANGELOG.md#071---2023-01-17) for more.
- Updated `teloxide-core` to v0.9.0; see its [changelog](crates/teloxide-core/CHANGELOG.md#090---2023-01-17) for more.
- Updated `axum` to v0.6.0.
- The module structure
  - `teloxide::dispatching::update_listeners` => `teloxide::update_listeners`
  - `teloxide::dispatching::repls` => `teloxide::repls`
- `CommandDescriptions::new` was made `const`
- The following functions were made `#[must_use]`:
  - `DispatcherBuilder::{enable_ctrlc_handler, distribution_function}`

### Removed

- `rocksdb-storage` feature and associated items (See [PR #761](https://github.com/teloxide/teloxide/pull/761) for reasoning) [**BC**]

### Deprecated

- `teloxide::dispatching::{update_listeners, repls}` (see in the "Changed" section)

## 0.11.3 - 2022-11-28

### Fixed

- Add another missing feature gate for `dispatching::repls` import ([issue #770](https://github.com/teloxide/teloxide/issues/770))

## 0.11.2 - 2022-11-18

### Fixed

- Add missing feature gate for `dispatching::repls` import ([issue #770](https://github.com/teloxide/teloxide/issues/770))

## 0.11.1 - 2022-10-31 [yanked]

This release was yanked because it accidentally [breaks backwards compatibility](https://github.com/teloxide/teloxide/issues/770).

### Added

- The `rocksdb-storage` feature -- enables the RocksDB support ([PR #753](https://github.com/teloxide/teloxide/pull/753))
- `teloxide::dispatching::repls::CommandReplExt`, `teloxide::prelude::CommandReplExt` ([issue #740](https://github.com/teloxide/teloxide/issues/740))

### Deprecated

- `teloxide::dispatching::repls::{commands_repl, commands_repl_with_listener}`, `teloxide::utils::command::BotCommands::ty` (use `CommandReplExt` instead)

## 0.11.0 - 2022-10-07

### Changed

- Updated `teloxide-macros` to v0.7.0; see its [changelog](https://github.com/teloxide/teloxide-macros/blob/master/CHANGELOG.md#070---2022-10-06) for more
- Updated `teloxide-core` to v0.8.0; see its [changelog](https://github.com/teloxide/teloxide-core/blob/master/CHANGELOG.md#080---2022-10-03) for more
- `UpdateListener` now has an associated type `Err` instead of a generic
- `AsUpdateStream` now has an associated type `StreamErr` instead of a generic
- Rename `dispatching::stop_token::{AsyncStopToken, AsyncStopFlag}` => `stop::{StopToken, StopFlag}`
- Replace the generic error type `E` with `RequestError` for REPLs (`repl(_with_listener)`, `commands_repl(_with_listener)`)
- The following functions are now `#[must_use]`:
  - `BotCommands::ty`.
  - `CommandDescriptions::{new, global_description, username, username_from_me}`.
  - `teloxide::filter_command`.
  - `teloxide::dispatching::dialogue::enter`.
- `BotCommands::parse` now accept `bot_username` as `&str`

### Added

- `requests::ResponseResult` to `prelude`

### Removed

- `dispatching::stop_token::StopToken` trait (all uses are replaced with `stop::StopToken` structure)
- Some previously deprecated items
  - `enable_logging!`, `enable_logging_with_filter!`
  - `HandlerFactory`, `HandlerExt::dispatch_by`

## 0.10.1 - 2022-07-22

### Fixed

- Mark the following functions with `#[must_use]` ([PR 457](https://github.com/teloxide/teloxide/pull/457)):
  - `TraceStorage::into_inner`.
  - `AsyncStopToken::new_pair`.
  - `AsyncStopFlag::is_stopped`.
  - All from `crate::utils::{html, markdown}`.
- Rendering of GIFs in lib.rs and crates.io ([PR 681](https://github.com/teloxide/teloxide/pull/681)).

## 0.10.0 - 2022-07-21

### Added

- Security checks based on `secret_token` param of `set_webhook` to built-in webhooks.
- `dispatching::update_listeners::{PollingBuilder, Polling, PollingStream}`.
- `DispatcherBuilder::enable_ctrlc_handler` method.

### Fixed

- `Dispatcher` no longer "leaks" memory for every inactive user ([PR 657](https://github.com/teloxide/teloxide/pull/657)).
- Allow specifying a path to a custom command parser in `parse_with` ([issue 668](https://github.com/teloxide/teloxide/issues/668)).

### Changed

- Add the `Key: Clone` requirement for `impl Dispatcher` [**BC**].
- `dispatching::update_listeners::{polling_default, polling}` now return a named, `Polling<_>` type.
- Update `teloxide-core` to v0.7.0 with Bot API 6.1 support, see [its changelog][core07c] for more information [**BC**].

[core07c]: https://github.com/teloxide/teloxide-core/blob/master/CHANGELOG.md#070---2022-07-19

### Deprecated

- The `dispatching::update_listeners::polling` function.
- `Dispatcher::setup_ctrlc_handler` method.

## 0.9.2 - 2022-06-07

### Fixed

- Fix Api Unknown error (Can't parse entities) on message created with `utils::markdown::user_mention_or_link` if user full name contains some escapable symbols eg '.'

## 0.9.1 - 2022-05-27

### Fixed

- Fix `#[command(rename = "...")]` for custom command names ([issue 633](https://github.com/teloxide/teloxide/issues/633)).

## 0.9.0 - 2022-04-27

### Added

- The `dispatching::filter_command` function (also accessible as `teloxide::filter_command`) as a shortcut for `dptree::entry().filter_command()`.
- Re-export `dptree::case!` as `teloxide::handler!` (the former is preferred for new code).

### Changed

- Update `teloxide-core` to v0.6.0 with [Bot API 6.0] support [**BC**].

[Bot API 6.0]: https://core.telegram.org/bots/api#april-16-2022

## 0.8.2 - 2022-04-26

### Fixed

- Fix the broken `#[derive(DialogueState)]` (function return type `dptree::Handler`).

## 0.8.1 - 2022-04-24

### Added

- Implement `GetChatId` for `Update`.
- The `dialogue::enter()` function as a shortcut for `dptree::entry().enter_dialogue()`.

## 0.8.0 - 2022-04-18

### Removed

- The old dispatching system and related stuff: `dispatching`, `utils::UpState`, `prelude`, `repls2`, `crate::{dialogues_repl, dialogues_repl_with_listener}`, and `#[teloxide(subtransition)]` [**BC**].

### Added

- The new API for dialogue handlers: `teloxide::handler!` ([issue 567](https://github.com/teloxide/teloxide/issues/567)).
- Built-in webhooks support via `teloxide::dispatching::update_listeners::webhooks` module.
- `Dialogue::chat_id` for retrieving a chat ID from a dialogue.

### Changed

- Updated `teloxide-core` from version `0.4.5` to version [`0.5.0`](https://github.com/teloxide/teloxide-core/releases/tag/v0.5.0) [**BC**]
- Rename `dispatching2` => `dispatching` [**BC**].
- Rename `prelude2` => `prelude` [**BC**].
- Move `update_listeners`, `stop_token`, `IdleShutdownError`, and `ShutdownToken` from the old `dispatching` to the new `dispatching` (previously `dispatching2`).
- Replace `crate::{commands_repl, commands_repl_with_listener, repl, repl_with_listener}` with those of the new `dispatching` [**BC**].
- `UpdateListener::StopToken` is now always `Send` [**BC**].
- Rename `BotCommand` trait to `BotCommands` [**BC**].
- `BotCommands::descriptions` now returns `CommandDescriptions` instead of `String` [**BC**].
- Mark `Dialogue::new` as `#[must_use]`.

### Fixed

- Concurrent update handling in the new dispatcher ([issue 536](https://github.com/teloxide/teloxide/issues/536)).

### Deprecated

- `HandlerFactory` and `HandlerExt::dispatch_by` in favour of `teloxide::handler!`.

## 0.7.3 - 2022-04-03

### Fixed

- Update `teloxide-core` to version `0.4.5` to fix a security vulnerability. See more in `teloxide-core` [release notes](https://github.com/teloxide/teloxide-core/releases/tag/v0.4.5).

## 0.7.2 - 2022-03-23

### Added

- The `Storage::erase` default function that returns `Arc<ErasedStorage>`.
- `ErasedStorage`, a storage with an erased error type.
- Allow the storage generic `S` be `?Sized` in `Dialogue` and `HandlerExt::enter_dialogue`.

### Deprecated

- `enable_logging!` and `enable_logging_with_filter!` macros

### Fixed

- Log `UpdateKind::Error` in `teloxide::dispatching2::Dispatcher`.
- Don't warn about unhandled updates in `repls2` ([issue 557](https://github.com/teloxide/teloxide/issues/557)).
- `parse_command` and `parse_command_with_prefix` now ignores case of the bot username

## 0.7.1 - 2022-03-09

### Fixed

- Compilation with non-default features

## 0.7.0 - 2022-02-09

### Fixed

- `Dispatcher` wasn't `Send`. Make `DispatcherBuilder::{default_handler, error_handler}` accept a handler that implements `Send + Sync` ([PR 517](https://github.com/teloxide/teloxide/pull/517)).

## 0.6.1 - 2022-02-06

### Fixed

- docs.rs documentation build

## 0.6.0 - 2022-02-06

### Added

- `BotCommand::bot_commands` to obtain Telegram API commands ([issue 262](https://github.com/teloxide/teloxide/issues/262)).
- The `dispatching2` and `prelude2` modules. They present a new dispatching model based on `dptree`.

### Changed

- Require that `AsUpdateStream::Stream` is `Send`.
- Restrict a user crate by `CARGO_CRATE_NAME` instead of `CARGO_PKG_NAME` in `enable_logging!` and `enable_logging_with_filter!`.
- Updated `teloxide-core` to v0.4.0, see [its changelog](https://github.com/teloxide/teloxide-core/blob/master/CHANGELOG.md#040---2022-02-03).

### Deprecated

 - The `dispatching` and `prelude` modules.

### Fixed

- Infinite retries while stopping polling listener ([issue 496](https://github.com/teloxide/teloxide/issues/496))
- `polling{,_default}` and it's `Stream` and `StopToken` not being `Send` (and by extension fix the same problem with `repl`s)

## 0.5.3 - 2021-10-25

### Fixed

- Compilation when the `ctrlc_handler` feature is disabled ([issue 462](https://github.com/teloxide/teloxide/issues/462))

## 0.5.2 - 2021-08-25

### Fixed

- Depend on a correct `futures` version (v0.3.15).

## 0.5.1 - 2021-08-05

### Changed

- Improved log messages when `^C` is received with `^C` handler set up

## 0.5.0 - 2021-07-08

### Added

- `Storage::get_dialogue` to obtain a dialogue indexed by a chat ID.
- `InMemStorageError` with a single variant `DialogueNotFound` to be returned from `InMemStorage::remove_dialogue`.
- `RedisStorageError::DialogueNotFound` and `SqliteStorageError::DialogueNotFound` to be returned from `Storage::remove_dialogue`.
- A way to `shutdown` dispatcher
  - `Dispatcher::shutdown_token` function.
  - `ShutdownToken` with a `shutdown` function.
- `Dispatcher::setup_ctrlc_handler` function ([issue 153](https://github.com/teloxide/teloxide/issues/153)).
- `IdleShutdownError`
- Automatic update filtering ([issue 389](https://github.com/teloxide/teloxide/issues/389)).
- Added reply shortcut to every kind of messages ([PR 404](https://github.com/teloxide/teloxide/pull/404)).

### Changed

- Do not return a dialogue from `Storage::{remove_dialogue, update_dialogue}`.
- Return an error from `Storage::remove_dialogue` if a dialogue does not exist.
- Require `D: Clone` in `dialogues_repl(_with_listener)` and `InMemStorage`.
- Automatically delete a webhook if it was set up in `update_listeners::polling_default` (thereby making it `async`, [issue 319](https://github.com/teloxide/teloxide/issues/319)).
- `polling` and `polling_default` now require `R: 'static`
- Refactor `UpdateListener` trait:
  - Add a `StopToken` associated type.
    - It must implement a new `StopToken` trait which has the only function `fn stop(self);`
  - Add a `stop_token` function that returns `Self::StopToken` and allows stopping the listener later ([issue 166](https://github.com/teloxide/teloxide/issues/166)).
  - Remove blanked implementation.
  - Remove `Stream` from super traits.
  - Add `AsUpdateStream` to super traits.
    - Add an `AsUpdateStream` trait that allows turning implementors into streams of updates (GAT workaround).
  - Add a `timeout_hint` function (with a default implementation).
- `Dispatcher::dispatch` and `Dispatcher::dispatch_with_listener` now require mutable reference to self.
- Repls can now be stopped by `^C` signal.
- `Noop` and `AsyncStopToken`stop tokens.
- `StatefulListener`.
- Emit not only errors but also warnings and general information from teloxide, when set up by `enable_logging!`.
- Use `i64` instead of `i32` for `user_id` in `html::user_mention` and `markdown::user_mention`.
- Updated to `teloxide-core` `v0.3.0` (see it's [changelog](https://github.com/teloxide/teloxide-core/blob/master/CHANGELOG.md#030---2021-07-05) for more)

### Fixed

- Remove the `reqwest` dependency. It's not needed after the [teloxide-core] integration.
- A storage persistence bug ([issue 304](https://github.com/teloxide/teloxide/issues/304)).
- Log errors from `Storage::{remove_dialogue, update_dialogue}` in `DialogueDispatcher` ([issue 302](https://github.com/teloxide/teloxide/issues/302)).
- Mark all the functions of `Storage` as `#[must_use]`.

## 0.4.0 - 2021-03-22

### Added

- Integrate [teloxide-core].
- Allow arbitrary error types to be returned from (sub)transitions ([issue 242](https://github.com/teloxide/teloxide/issues/242)).
- The `respond` function, a shortcut for `ResponseResult::Ok(())`.
- The `sqlite-storage` feature -- enables SQLite support.
- `Dispatcher::{my_chat_members_handler, chat_members_handler}`

[teloxide-core]: https://github.com/teloxide/teloxide-core

### Deprecated

- `UpdateWithCx::answer_str`

### Fixed

- Hide `SubtransitionOutputType` from the docs.

### Changed

- Export `teloxide_macros::teloxide` in `prelude`.
- `dispatching::dialogue::serializer::{JSON -> Json, CBOR -> Cbor}`
- Allow `bot_name` be `N`, where `N: Into<String> + ...` in `commands_repl` & `commands_repl_with_listener`.
- 'Edit methods' (namely `edit_message_live_location`, `stop_message_live_location`, `edit_message_text`,
   `edit_message_caption`, `edit_message_media` and `edit_message_reply_markup`) are split into common and inline
   versions (e.g.: `edit_message_text` and `edit_inline_message_text`). Instead of `ChatOrInlineMessage` common versions
   accept `chat_id: impl Into<ChatId>` and `message_id: i32` whereas inline versions accept
   `inline_message_id: impl Into<String>`. Also note that return type of inline versions is `True` ([issue 253], [pr 257])
- `ChatOrInlineMessage` is renamed to `TargetMessage`, it's `::Chat`  variant is renamed to `::Common`,
   `#[non_exhaustive]` annotation is removed from the enum, type of `TargetMessage::Inline::inline_message_id` changed
   `i32` => `String`. `TargetMessage` now implements `From<String>`, `get_game_high_scores` and `set_game_score` use
   `Into<TargetMessage>` to accept `String`s. ([issue 253], [pr 257])
- Remove `ResponseResult` from `prelude`.

[issue 253]: https://github.com/teloxide/teloxide/issues/253
[pr 257]: https://github.com/teloxide/teloxide/pull/257

## 0.3.4 - 2020-01-13

### Fixed

- Failing compilation with `serde::export` ([issue 328](https://github.com/teloxide/teloxide/issues/328)).

## 0.3.3 - 2020-10-30

### Fixed

- The `dice` field from `MessageDice` is public now ([issue 306](https://github.com/teloxide/teloxide/issues/306))

## 0.3.2 - 2020-10-23

### Added

- `LoginUrl::new` ([issue 298](https://github.com/teloxide/teloxide/issues/298))

## 0.3.1 - 2020-08-25

### Added

- `Bot::builder` method ([PR 269](https://github.com/teloxide/teloxide/pull/269)).

## 0.3.0 - 2020-07-31

### Added

- Support for typed bot commands ([issue 152](https://github.com/teloxide/teloxide/issues/152)).
- `BotBuilder`, which allows setting a default `ParseMode`.
- The `Transition`, `Subtransition`, `SubtransitionOutputType` traits.
- A nicer approach to manage dialogues via `#[derive(Transition)]` + `#[teloxide(subtransition)]` (see [`examples/dialogue_bot`](https://github.com/teloxide/teloxide/tree/af2aa218e7bfc442ab4475023a1c661834f576fc/examples/dialogue_bot)).
- The `redis-storage` feature -- enables the Redis support.
- The `cbor-serializer` feature -- enables the `CBOR` serializer for dialogues.
- The `bincode-serializer` feature -- enables the `Bincode` serializer for dialogues.
- The `frunk` feature -- enables `teloxide::utils::UpState`, which allows mapping from a structure of `field1, ..., fieldN` to a structure of `field1, ..., fieldN, fieldN+1`.
- Upgrade to v4.9 Telegram bots API.
- `teloxide::utils::client_from_env` -- constructs a client from the `TELOXIDE_TOKEN` environmental variable.
- Import `Transition`, `TransitionIn`, `TransitionOut`, `UpState` to `teloxide::prelude`.
- Import `repl`, `commands_repl` to `teloxide`.
- Let users inspect an unknown API error using `ApiErrorKind::Unknown(String)`. All the known API errors are placed into `KnownApiErrorKind`.
- Setters to all the API types.
- `teloxide::dispatching::dialogue::serializer` -- various serializers for memory storages. The `Serializer` trait, `Bincode`, `CBOR`, `JSON`.
- `teloxide::{repl, repl_with_listener, commands_repl, commands_repl_with_listener, dialogues_repl, dialogues_repl_with_listener}`
- `InputFile::Memory`
- Option to hide a command from description ([issue 217](https://github.com/teloxide/teloxide/issues/217)).
- Respect the `TELOXIDE_PROXY` environment variable in `Bot::from_env`.

### Deprecated

- `Bot::{from_env_with_client, new, with_client}`

### Changed

- `DialogueDispatcherHandlerCx` -> `DialogueWithCx`.
- `DispatcherHandlerCx` -> `UpdateWithCx`.
- Now provided description of unknown telegram error, by splitting ApiErrorKind at `ApiErrorKind` and `ApiErrorKindKnown` enums ([issue 199](https://github.com/teloxide/teloxide/issues/199)).
- Extract `Bot` from `Arc` ([issue 216](https://github.com/teloxide/teloxide/issues/230)).
- Mark all the API types as `#[non_exhaustive]`.
- Replace all `mime_type: String` with `MimeWrapper`.

### Fixed

- Now methods which can send file to Telegram return `tokio::io::Result<T>`. Before that it could panic ([issue 216](https://github.com/teloxide/teloxide/issues/216)).
- If a bot wasn't triggered for several days, it stops responding ([issue 223](https://github.com/teloxide/teloxide/issues/223)).

## 0.2.0 - 2020-02-25

### Added

- The functionality to parse commands only with a correct bot's name (breaks backwards compatibility) ([Issue 168](https://github.com/teloxide/teloxide/issues/168)).
- This `CHANGELOG.md`.

### Fixed

- Fix parsing a pinned message ([Issue 167](https://github.com/teloxide/teloxide/issues/167)).
- Replace `LanguageCode` with `String`, because [the official Telegram documentation](https://core.telegram.org/bots/api#getchat) doesn't specify a concrete version of IETF language tag.
- Problems with the `poll_type` field ([Issue 178](https://github.com/teloxide/teloxide/issues/178)).
- Make `polling_default` actually a long polling update listener ([PR 182](https://github.com/teloxide/teloxide/pull/182)).

### Removed

- [either](https://crates.io/crates/either) from the dependencies in `Cargo.toml`.
- `teloxide-macros` migrated into [the separate repository](https://github.com/teloxide/teloxide-macros) to easier releases and testing.

## 0.1.0 - 2020-02-19

### Added
- This project.