v4.5.3.1cz

Commits:

• apps: update chat bots, readme (simplex-chat#1928)
• core: encrypt/decrypt WebRTC frames (simplex-chat#1935)
• terminal: support multiline messages (as JSON strings) (simplex-chat#1936)
• core: separate core options to use in bots (simplex-chat#1937)
• core: update simplexmq v4.4.1
• ios: export localizations
• translations (simplex-chat#1938)
• mobile: add Dutch interface (simplex-chat#1941)
• core: 4.5.3.0
• 4.5.3-beta.0: Android 101, iOS 126
• core: WebRTC frames encryption (simplex-chat#1942)
• mobile: welcome/about page (simplex-chat#1946)
• ios: update core library
• core: update/fix webrtc frame encryption function to return error (simplex-chat#1950)
• website internationalization (simplex-chat#1922)
• fix comment syntax in cabal.project.mac (simplex-chat#1948)
• core: use 12 bytes IV for WebRTC frame encryption with AES-GCM (simplex-chat#1951)
• blog: string fix (simplex-chat#1952)
• core: increase default queue sizes to 1024, fix broadcast bot not to lock when queue is smaller than the number of contacts (simplex-chat#1955)
• ios: do not show notifications on update events in inactive profiles (simplex-chat#1959)
• ios: allow pasting profile image
• docs: fixes listening port (server) (simplex-chat#1958)
• teminal: option to log errors and service messages to file, closes simplex-chat#1516 (simplex-chat#1957)
• translations (simplex-chat#1956)
• mobile: add Czech, fix translations (simplex-chat#1961)
• core: 4.5.3.1
• android: show "export prohibited" alert on enabling app data backup with random db password set (simplex-chat#1962)
• 4.5.3: Android 102
• 4.5.3: iOS 127
• blog: SimpleX File Transfer Protocol (XFTP) (simplex-chat#1965)
• blog: typos
• ios: native WebRTC (simplex-chat#1933)
• terminal: update help, remove user ID from terminal /smp test command (simplex-chat#1973)
• core: initial group member role when joining via link (simplex-chat#1975)
• ios: group link role, add observer role (simplex-chat#1978)
• ios: UI to moderate messages of other members (simplex-chat#1980)
• android: UI to moderate messages to other members (simplex-chat#1982)
• website: add support for overlay hash in URL (simplex-chat#1974)
• android: group link role, add observer role (simplex-chat#1981)
• Added translated docs to czech