Update to layer 203 (59da66e by Darskiy)

Update FileLike type hint to better reflect valid types (#4620) (663a180 by Darskiy)

Add customizable 'mime_type' for send_file (1db71f6 by yzx23333)

Add custom error types for new FROZEN codes (69e4493 by Aayco)

Add `persistent` and `placeholder` options to buttons (#4629) (8bb2ec3 by Darskiy)

Cleanup usage of removed inline_only parameter (#4630) (f615182 by Darskiy)

Support tg-emoji tag when using html parse_mode (17a0149 by zeticsce)

Update to layer 204 (7b00d2f by New-dev0)

Handle cases when Message.reply_to is MessageReplyStoryHeader (31e8cee by HanaokaYuzu)

Update to layer 206 (#4654) (aa17aa6 by wkpn)

Update to layer 207 (7d0fade by Darskiy)

Update to layer 209 (5e150dd by wkpn)

Add isal gzip decompressor (b59c005 by humbertogontijo)

Reduce data manipulation operations (01af2fc by humbertogontijo)

Update to layer 210 (e168602 by WildBeeJS)

Fix spoilers when sending InputPhoto and InputDocument (45a546a by Deer-Spangle)

Add experimental support for async sessions (#4667) (d80898e by humbertogontijo)

Update to layer 211 (e77307d by Lonami)

Update to layer 211 (again) (#4683) (a28e757 by Darskiy)

@TelethonChat continues to be flooded with spam, so it will now ask admins for approval before new users can join. @TelethonianBot should message you with a quiz that you must complete before joining. If the quiz is not working, or you're not being admitted after correctly answering all the questions, please message me and help me diagnose what is going wrong.

Edit 1: fixed leftover test ID. You can retry by asking to join again. It appears to be working now.

Edit 2: admins other than the bot are unlikely to approve join requests. We simply cannot tell from the name and bio alone who is a bot and who is not. The quiz is needed to better guarantee that people who join are willing to spend time formulating a proper question.

Edit 3: the join queue may be cleared periodically, so if you missed your chance to join some days past, try to request joining again. Note that tdesktop's flood wait on join requests seems to be invisible, but it should eventually go through.