Monal - XMPP chat

There has never been a better time to get into XMPP, a free public chat network no one controls or owns. Monal is a fast and user friendly way to use XMPP. Just download the app, login or register and you are ready to chat in minutes. It looks and works the way other apps do, so there is no need to “learn XMPP” or even care what it is.

Notable features:
- Open Source
- No Ads! Strong focus on privacy. Does not phone home and does not have "metrics" software 
- Does not read any personal information.
- With a direct connection to your server, your password and all other info is never sent to a third party.
- OMEMO encrypted chat
- Will work with corporate XMPP servers that require VPN
- MUC multi user chat

Implements XMPP certain extensions intended to improve mobile communication.
- XEP-0357: Push Notifications
- XEP-0280: Message Carbons keep messages in synch between clients.
- XEP-0198: Stream Management to quickly reconnect.
- XEP-0199: XMPP Ping to maintain connections.
- XEP-0313: Message Archive Management to download chat history.
- XEP-0352: Client State Indication for dramatic reduction on power use.
- XEP-0363: HTTP File Upload to send images in conversations.

更新履歴
- Fix muc status code handling for biboumi
- Implement XEP-0425: Moderated Message Retraction
- Implement XEP-0490: Message Displayed Synchronization
- Better default chat background for light and dark mode
- Fix crashes when used with very old Openfire server
- Improve cert error message
- Highlight selected chat on iPad and macOS
- Mark pinned chats with icon instead of color
- Completely rewrite privacy settings (thanks Vaidik)
- Automatically focus chat input and open keyboard when entering chat
- Allow SASL PLAIN on servers not supporting SCRAM but SASL2
- Completely new debug menu
- Add new privacy setting to allow/block calls from strangers
- Don't block callkit in china anymore
- Fix several other crashes and UI bugs