nalgorithm for Android 1.0.2

Notes read better, and learning from likes works even when a relay is down.

• Notes show their formatting: bold, italic, code, headings, bullets and links, instead of raw asterisks.
• A long note in the feed shows its first lines with Read more. The note sheet shows all of it.
• When one relay was slow or unreachable, the app could lose what the other relays sent. That hid your likes from learning, so the learned taste stayed empty. Fixed.
• A digest whose model sends nothing is tried again automatically.
• Update learned taste now says when the model failed, instead of claiming you have no likes.
• Changing the feed order updates the status line at once, and the digest screen no longer scrolls under the clock.

Signed with certificate SHA-256 79750fb49349ec3729be5a3e825507a15e47c6d987e854ae91d5d50a20b3a24d, the same key as all cypherpunk.today Android apps.