v0.6.0

• Use new login parameters instead of deprecated user
• Workaround servers returning null for .well-known in /login
• Various edit relation fixes
• Support space state events
• Use coeurl as the http backend
• Remove boost dependency
• Support retrieval of specific state events
• Use a generic UIAHandler for all UIA endpoints
• Support registration tokens in UIA (callum)
• Support email and telephone numbers in UIA
• Support sticker and emote packs (MSC2545)
• Timeout connections properly
• Properly clear bit 63 of the IV when doing AES
• Allow converting a private key to a public key
• Add knocks and restricted rooms support
• Implement online key backup session encryption
• Fix parsing query_keys responses with optional keys
• Fix compilation with Olm 3.2.5
• Support meson for compilation. This does not generate the cmake files needed by cmake projects to find mtxclient
• Add bootstrapping for SSSS, online key backup and cross-signing keys
• Implement the device query and update endpoints