Stig

Breaking changes:
* Instead of '|', the commands 'list' and 'filelist' use horizontal tab
characters ('\t') as column delimiters in machine-readable output

Other changes:
* New command: 'peerlist'
* New theme option 'bright_is_bold'
* Paused torrents are blue instead of dark gray, which seems to have
better contrast in most color schemes
* Tab command has new '--background' option to open tabs without focusing
them

Fixed bugs:
* Pressing any F* key crashed the application
* With no torrent lists open, stig would become unresponsive due to an
endless loop
* Setting 'srv.limit.rate.up/down' to boolean values displayed an error
about 'off' not being a number

Changes:
* Proper chaining of commands with '&', '|' and ';' (see 'help commands')
* Display number of torrents in tab titles
* <D> moves to left tab after closing focused tab
* 'tab' command no longer accepts -/+ for left/right tab
* default.theme file now documents how to make your own theme

Fixed bugs:
* 'set tui.theme path/to/theme' crashed the TUI
* Empty file list when opened and closed rapidly
* Long, wrapped log messages were not displayed
* <+> was wrongly interpreted as a key chain with two empty keys

IMPORTANT: Keybindings have changed; run 'stig help keys' for a list.

New features:
* Chained keybindings (like in Emacs)
* Add 'move' command to change torrents' download path
* Add 'announce' command to re-announce torrents manually to tracker(s)
* More accurate torrent ETA ("1h28m" instead of just "1h")

Fixed bugs:
* Page up/down keys are working again in torrent lists

* Fix bug in setup.py when README.org was missing