Discord-py

- `Botstop` and `Gatewaystop` now explicitly return `nil`, for more convenient use in commands
- The API method to query for users has been removed as the endpoint no longer exists
- Some more methods have been changed to resolve IDs, which means they can be called with integer and string IDs instead of just the objects ([313](https://github.com/meew0/discordrb/pull/313), thanks LikeLakers2)
- Bulk deleting now uses the new non-deprecated URL – this has no immediate effect, but once the old one will be removed bots using it will not be able to bulk delete anymore (see also [309](https://github.com/meew0/discordrb/issues/309))
Bugfixes

- Fixed another bug with resumes that caused issues when resuming a zombie connection
- Fixed a bug that caused issues when playing short files ([326](https://github.com/meew0/discordrb/issues/316))

- Attempt to fix an issue that causes a strange problem with dependencies when installing discordrb

- Various parts of gateway error handling were improved, leading to significant stability improvements:
- A long standing bug was fixed that prevented resumes in most cases, which caused unnecessary reconnections.
- The error handler that handles problems with sending the raw data over TCP now catches errors more broadly.
- Heartbeat ACKs (opcode 11) are now checked, which allows the client to detect zombie connections early on. If this causes problems for you you can disable it using `bot.gateway.check_heartbeat_acks = false`.
- Received heartbeats are now properly handled again
- Added a client for webhooks, implemented as a separate gem `discordrb-webhooks`. This allows the creation of applications that only use webhooks without the overhead provided by the rest of discordrb. The gem is added as a dependency by normal discordrb so you don't need to install it separately if you're already using that.
- Adding, updating or deleting custom emoji is now supported ([285](https://github.com/meew0/discordrb/pull/285), thanks Daniel-Worrall)
- Rich embeds can now be sent alongside messages, for example using the `embed` parameter in `send_message`, or with the new method `Channelsend_embed`
- `advanced_functionality` bots now support escaping using backslashes ([293](https://github.com/meew0/discordrb/issues/293) / [304](https://github.com/meew0/discordrb/pull/304), thanks LikeLakers2)
- Added type checking and conversion for commands ([298](https://github.com/meew0/discordrb/pull/298), thanks ohtaavi)
- Bulk deleting messages now checks for message age (see also [hammerandchisel/discord-api-docs208](https://github.com/hammerandchisel/discord-api-docs/issues/208)). By default, it will ignore messages that are too old to be bulk deleted, but there is also a `strict` mode setting now that raises an exception in such a case.
- Reactions can now be viewed for existing messages ([262](https://github.com/meew0/discordrb/pull/262), thanks z64), added to messages ([266](https://github.com/meew0/discordrb/pull/266), thanks z64), and listened for using gateway events as well as internal handlers ([300](https://github.com/meew0/discordrb/issues/300)).
- Game types and stream URLs are now cached ([297](https://github.com/meew0/discordrb/issues/297))
- The default non-streaming game was changed to be `0` instead of `nil` ([277](https://github.com/meew0/discordrb/pull/277), thanks zeyla)
- A method `Channeldelete_message` was added to support deleting single messages by ID without prior resolution.
- Permission overwrites can now be deleted from channels ([268](https://github.com/meew0/discordrb/pull/268), thanks greenbigfrog)
- There is now a utility method `IDObject.synthesise` that creates snowflakes with specific timestamps out of thin air.
- Typing events are now respondable, so you can call `respond` on them for example ([270](https://github.com/meew0/discordrb/pull/270), thanks VxJasonxV)
- Message authors can now be `User` objects if a `Member` object could not be found or created ([290](https://github.com/meew0/discordrb/issues/290))
- Added two new events, `unknown` ([288](https://github.com/meew0/discordrb/issues/288)) and `raw`, that are raised for unknown dispatches and all dispatches, respectively.
- Bots can now be set to fully ignore other bots ([257](https://github.com/meew0/discordrb/pull/257), thanks greenbigfrog)
- Voice state update events now have an `old_channel` property/attribute that denotes the previous channel the user was in in case of joining/moving/leaving.
- The default help command no longer shows commands the user can't use ([275](https://github.com/meew0/discordrb/pull/275), thanks FormalHellhound)
- Updated the command example to no longer include user-specific stuff ([260](https://github.com/meew0/discordrb/issues/260))
- `Serverrole` now resolves IDs, so they can be passed as strings if necessary.

Bugfixes

- Fixed bots' shard settings being ignored in certain cases
- Parsing role mentions using `Botparse_mention` works properly now.
- Fixed some specific REST methods that were broken by the API module refactor ([302](https://github.com/meew0/discordrb/pull/302), thanks LikeLakers2)
- Cached channel data is now updated properly on change ([272](https://github.com/meew0/discordrb/issues/272))
- Users' avatars are now updated properly on change ([265](https://github.com/meew0/discordrb/pull/265), thanks Roughsketch)
- Fixed voice state tracking for newly created channels ([292](https://github.com/meew0/discordrb/issues/292))
- Fixed event attribute handling for PlayingEvent ([303](https://github.com/meew0/discordrb/pull/303), thanks sven-strothoff)
- Getting specific emoji by ID no longer fails to resolve non-cached emoji ([283](https://github.com/meew0/discordrb/pull/283), thanks greenbigfrog)
- Voice state update events no longer fail to be raised for users leaving channels, if the event handler had a channel attribute set ([301](https://github.com/meew0/discordrb/issues/301))
- Bots that don't define any events should work properly again
- Fixed error handling for messages over the character limit ([276](https://github.com/meew0/discordrb/issues/276))
- Fixed some specific log messages not being called properly ([263](https://github.com/meew0/discordrb/pull/263), thanks Roughsketch)
- Fixed some edge case bugs in the default help command:
- In the case of too many commands to be sent in the channel, it no longer replies with "Sending help in PM!" when called from PM
- It no longer fails completely if called from PM if there are any commands that require server-specific checks ([308](https://github.com/meew0/discordrb/issues/308))
- Fixed a slight formatting mistake
- Quoted command arguments in `advanced_functionality` are no longer split by newline
- Fixed a specific edge case in command chain handling where handling commands with the same name as the chain delimiter was broken

*Bugfix-only release.*

Bugfixes

- An oversight where a `GUILD_DELETE` dispatch would cause an internal error was fixed. ([256](https://github.com/meew0/discordrb/pull/256), thanks greenbigfrog)

- Emoji handling support ([226](https://github.com/meew0/discordrb/pull/226), thanks greenbigfrog)
- A `channels` attribute has been added to `CommandBot` as well as `Command` to restrict the channels in which either of the two works ([249](https://github.com/meew0/discordrb/pull/249), thanks Xzanth)
- The bulk deletion endpoint is now exposed directly using the `Channeldelete_messages` method ([235](https://github.com/meew0/discordrb/pull/235), thanks z64)
- The internal settings fields for user statuses that cause statuses to persist across restarts can now be modified ([233](https://github.com/meew0/discordrb/pull/233), thanks Daniel-Worrall)
- A few examples have been added to the docs ([250](https://github.com/meew0/discordrb/pull/250), thanks SunDwarf)
- The specs have been improved; they're still not exhaustive by far but there are at least slightly more now.

Bugfixes

- Fixed an important bug that caused the logger not to work in some cases. ([243](https://github.com/meew0/discordrb/pull/243), thanks Daniel-Worrall)
- Fixed logger token redaction.
- `unavailable_servers` should no longer crash the bot due to being nil in some cases ([244](https://github.com/meew0/discordrb/pull/244), thanks Daniel-Worrall)
- `Profileon` for member resolution is now no longer overwritten by an alias for `online` ([247](https://github.com/meew0/discordrb/pull/247), thanks Daniel-Worrall)
- A `CommandBot` without any commands should no longer crash when receiving a message that triggers it ([242](https://github.com/meew0/discordrb/issues/242))
- Changing nicknames works again, it has apparently been broken in 3.0.0.

- A small change to how CommandBot parameter lists are formatted ([240](https://github.com/meew0/discordrb/pull/240), thanks FormalHellhound)

Bugfixes

- Setting properties on a channel (e.g. `Channeltopic=`) works again ([238](https://github.com/meew0/discordrb/issues/238) / [239](https://github.com/meew0/discordrb/pull/239), thanks Daniel-Worrall)