Nuqql

* Rework history viewing code in log window
* Add additional keybinds to conversation list and input windows:
* `ctrl-n`: go to next unread or more recently used conversation
* `ctrl-b`: go back to previously used conversation
* `ctrl-v`: search/filter conversation list
* Additional conversation list keybinds:
* `j`, `k`: move cursor down, up
* `/`: search/filter conversation list
* Add most recently used sorting of the conversation list
* Add configuration file for setting ui layout, colors, keybinds, keymap,
window titles, conversation list sorting
* Improve nuqql-keys to work with nuqql config file
* Improve backend start and reduce wait time
* Code cleanups, fixes, and improvements

* Add group chat support and helper commands for group chats:
* `/names`: get list of users in current group chat
* `/invite <user>`: invite user to current group chat
* `/join`: join the current group chat (after getting invited)
* `/part`: leave current group chat
* Add history searching: search the history with `/` and then jump to next
match with `n` and previous match with `p`
* Add `F10` hotkey to jump from a conversation to first URL starting with
http in its history and also switch to zoomed view
* Add support for the nuqql-matrixd backend
* Cleanups, fixes, and improvements
* Requires purpled v0.4, nuqql-slixmppd v0.3, or nuqql-matrixd v0.1

* Add additional keybinds in Input Window:
* `ctrl-a`: go to beginning of line
* `ctrl-e`: go to end of line
* `ctrl-k`: delete from cursor to end of line
* `ctrl-u`: delete line
* Add additional keybinds in List and Log Window:
* `HOME`: jump to first line
* `END`: jump to last line
* Add Log Window zooming with `F9` key when browsing the history
* Add account status and persistent global status (for all accounts) in
`{nuqql}` conversation:
* `global-status get`: get global status
* `global-status set <status>`: set global status to `<status>`
* Improve terminal resize handling
* Improve conversation list focus and conversation history behaviour
* Code cleanups, fixes and reorganization
* Requires purpled v0.3 or nuqql-slixmppd v0.2

* Introduce chat history support
* Add support for the slixmppd backend
* Rename Buddy List to Conversation List
* Introduce multiple backend support
* Each backend is listed as conversation in the Conversation List
* nuqql command window is now also a conversation in the Conversation List
* Coding style fixes and code reorganization
* Requires purpled v0.2 or nuqql-slixmppd v0.1.

* Make nuqql configuration easier:
* Look for purpled in $PATH
* Retrieve accounts from purpled
* Allow sending commands to purpled directly from nuqql using the command
window
* Restructure code.
* Introduce `.config/nuqql` in your home directory as working directory.
purpled sock file, config, logs, etc. are stored in
`.config/nuqql/backend/purpled`
* Requires purpled v0.2.

* First/initial release.
* Requires purpled v0.1.