Replace peer.*.conf files with index packed locations
Instead of adding a URL to peers.*.conf, run txt pull <url>
Conversion
Rewritten converters
txt-convert looks for a .convert.conf containing key: value lines.
Specifiable topic-roots from .convert.conf.
Added Topics: key, with comma seperated topics.
If set only those topics will appear in the main index and used as topic roots.
Other topics will have sub-indices generated, but won't be listed in the main index.
HTML converter header & footer options
HTML-index renamed to HTM-index
Internal
Change types: uuid:Uuid -> id:string
File_store merges identical texts
Use peer ID for store path, store peers' texts in .local/share/texts
Simple URN resolution for converter
Continue to next feed if parsing one fails
Phasing-out Archive, replaced by improved packs
Eliminate Bos, Cohttp, lwt, uri, tls, Re, Ptime, dependencies