handlewit,backfill: consistent parsing of snowflake message IDs (#94)

Fix receiving messages and sending messages by ensuring we use the latest conversation key (#93)

handletwit,twittermeow: flag incorrect uses of contexts and create room calls

changelog: fix typo

juiceboxgo: sync up with latest 0.3.4 version of juicebox (#92)

Bump version to v26.03

login: remove "." at end of description so linkification works

all: misc cleanup

dependencies: update mautrix-go

connector: link to XChat documentation when prompting for encryption pin

dependencies: update mautrix-go

connector: fix unencrypted conversation backfilling

twittermeow: Add operationName and extensions to SendMessageMutation payload (#90)

connector & twittermeow: fix PLAT-35423 participant info not updating properly on room creation

connector: fix conversations with self and ensure chat info is updated