• Update to version 3.0
• Drop maintainership

Changelog:

• added AppData file
• license changed to GPLv3.0+
• added 'apply to all tabs' in preferences dialog
• new options:

cursorBlinkMode, cursorShape
startMaximized, hideTitlebarWhenMaximized

• wordChars replaced with wordCharExceptions
• removed options:

imageFile, transparency, visibleBell

• Require libvte>0.29 and Gtk-3.