v0.19.4

✨ Features
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🙌 Improvements

• MXTools: Default to 1080p when converting a video (element-hq/element-ios/issues/4478).
• MXEvent: add support for voice messages
• MXRoom: Add support for sending slow motion videos using AVAsset (element-hq/element-ios/issues/4483).
• MXSendReplyEventStringsLocalizable: Added senderSentAVoiceMessage property

🐛 Bugfix

• Fix QR self verification with QR code (#1147)
• VoIP: Check for virtual users on attended call transfers.
• MXBackgroundCryptoStore: Remove read-only Realm and try again if Olm account not found in crypto store (element-hq/element-ios/issues/4534).

⚠️ API Changes

• MXSDKOptions: Add videoConversionPresetName to customise video conversion quality.
• MXRoom: Added duration and sample parameters on the sendVoiceMessage method (element-hq/element-ios/issues/4090)

🗣 Translations
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🧱 Build
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Others

• Fixed a nullability warning and some header warnings.

Improvements: