Stig

Fixed bugs:
* Further improvements for upcoming urwid release, making the TUI more
responsive (All thanks to rsekman!)

Fixed bugs:
* Improve compatibility with upcoming urwid release

Fixed bugs:
* Fix AttributeError: module 'stig.objects' has no attribute 'aioloop'
when removing 10 or more torrents via the CLI

Other changes:
* "unbind --all t" now unbinds "t" in all keybinding contexts.

Fixed bugs:
* Removed tilde expansion from completion candidates for the :move command

Fixed bugs:
* Fix "Unclosed client session" error when not using the TUI

Other changes:
* New "connect.proxy" setting that specifies a SOCKS tunnel for RPC
communication.
* Move cursor to the end of command when moving through history in the
builtin CLI.

Fixed bugs:
* Re-add "paused" alias for "stopped" filter to make the keybinding <f> <p>
working again.
* Fix "RuntimeError: Event loop stopped before Future completed." when
exiting the TUI.