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There is no free access to reading tweets anymore. So we cannot support Twitter in the Open Source app. More details in #579

Current account should always correspond to the selected timeline. I.e. it cannot be from another Social Network. On app start current account should be the one that belongs to current timeline (i.e. to the Default timeline). Show my account's avatar on an Action bar of a timeline in a case the timeline is for current account. #566

v.58. Background syncing and migration to Kotlin

• Fix background syncing on Android 9+.
• Fix downloads (avatars/attachments) with redirects, in which location is relative or absolute path without host and protocol.
• AndStatus fully migrated from Java to Kotlin.
• Fix a Zip Path Traversal Vulnerability.
• Add "Log out" button to the "Account" screen.
• Fix image resizing in a timeline.

1. Avoid duplicated mentions
2. Selecting "Discard" Options menu item during draft editing actually discards (deletes) the draft
3. Make notification visible in a timeline even if we couldn't find our Actor, who should be notified.
4. Clear "Outbox" notification, when an activity has been successfully sent
5. Better way to find out if conversation can be downloaded. Pump.io get at leastprevious activity of the conversation.

1. Added "summary" (Content warning) Note property and "Sensitive" flag (checkbox in the Editor). If the Note (Toot) is Sensitive, starting a Reply to that toot the app makes the Reply Sensitive also, and copies Summary (CW) from the parent toot also. Sensitive content may be made visible or invisible in the Navigation drawer (or in Settings -> Timeline). #507
2. More Mastodon attachments are shown now ("remote" media files are shown in a case the type of the local ones is "unknown")

1. Size of downloaded files/streams is controlled during download, and not after download completion, as before. This allows to stop downloading a file (or reading a timeline), which appeared to be larger than configured "Maximum size of an attachment"
2. If attachments are configured to be downloaded via Wi-Fi only: During download, AndStatus checks periodically, if Wi-Fi connection is still active. In case Wi-Fi connection is lost, the download is interrupted and will be retried later.

1. When some Actor follows (or stops following) me, show detailed info about that Actor, not about my Actor.
2. If an attached video has a preview image, that image will be shown (currently available for Mastodon only). View image / View media context menu item for remotely accessed media files.
3. Show a text link to a media file, for which even preview image couldn't be downloaded (instead of no attachment at all as before). #502
4. Don't download attached Video by default. May be changed in Settings -> Attachments -> Download attached video
5. Actor's avatar in their profile is shown with maximum resolution.
6. Fixed: Cannot delete a Note's Title (Name) after it was first saved (even in a draft).