Log Message:
Update to 1.0.0

mcabber (1.0.0)

 * Message Carbons support / XEP-0280 (Roeland Jago Douma)
 * Support for using external password managers (Christian Burkert)
 * [UI] Add a backward completion (Oleg)
 * [UI] Multilanguage spell checking (Dmitry Potapov)
 * [UI] New option 'buffer_smart_scrolling' to lock buffer automatically
   when scrolled up (Hermitifier)
 * [UI] New command /roster next_open_buffer
 * [UI] New option 'attention_char'
 * [UI] Try to display the GLib warnings in the log window
 * [UI] Display the number of occupants in MUC rooms (shizeeque)
 * [UI] New option switch /room topic -u to unescape the topic (shizeeque)
 * [MUC] Support for storing MUC room passwords (Nico Golde)
 * [MUC] Use bookmarked password (if any) when using "/room join"
 * [Hooks] New "hook-mdr-received" hook
 * Remove support for obsolete XEP 22 (Frank Zschockelt)
 * Misc. bugfixes and minor improvements

 -- Mikael, 2015-06-28