Add release notes for 3.δ

RELEASE-NOTES-3.d

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+Release notes for i3 v3.δ
+-----------------------------
+
+This is the third version (3.δ, transcribed 3.d) of i3. It is considered stable.
+
+This release features tabbing and some more advanced modifications of the
+stacking window (see the user’s guide), vim-like marks, support for the
+urgency hint, horizontal resizing of containers (finally), modes (which can
+make your keybindings a lot simpler), an unlimited amount of workspaces
+and several bugfixes (see below for the complete list of changes).
+
+Furthermore, the configuration file parsing has been rewritten to use a
+lex/yacc based lexer/parser. This makes our configuration file more easy to
+understand and more flexible from the point of view of a developer. For some
+of the new features, you already need the new lexer/parser. To not break your
+current configuration, however, the old parser is still included and used by
+default. I strongly recommend you to add the flag -l when starting i3 and
+switch your configuration file to the new lexer/parser. This should only
+require minor changes, if at all. In the next released version of i3, the
+old configuration file parsing will be removed!
+
+Thanks for this release go out to xeen, mist, badboy, Mikael, mxf, Atsutane,
+tsdh, litemotiv, shatter, msi, yurifury, dirkson, Scytale, Grauwolf and all
+other people who reported bugs/made suggestions.
+
+A list of changes follows:
+
+  * Implement tabbing (command "T")
+  * Implement horizontal resize of containers (containers! not windows)
+  * Implement the urgency hint for windows/workspaces
+  * Implement vim-like marks (mark/goto command)
+  * Implement stack-limit for further defining how stack windows should look
+  * Implement modes which allow you to use a different set of keybindings
+    when inside a specific mode
+  * Implement changing the default mode of containers
+  * Implement long options (--version, --no-autostart, --help, --config)
+  * Implement 'bt' to toggle between the different border styles
+  * Use a yacc/lex parser/lexer for the configuration file
+  * The number of workspaces is now dynamic instead of limited to 10
+  * Floating windows (and tiled containers) can now be resized using
+    floating_modifier and right mouse button
+  * Dock windows can now reconfigure their height
+  * Bugfix: Correctly handle multiple messages on the IPC socket
+  * Bugfix: Correctly use base_width, base_height and size increment hints
+  * Bugfix: Correctly send fake configure_notify events
+  * Bugfix: Don’t crash if the numlock symbol cannot be found
+  * Bugfix: Don’t display a colon after unnamed workspaces
+  * Bugfix: If the pointer is outside of the screen when starting, fall back to
+    the first screen.
+  * Bugfix: Initialize screens correctly when not using Xinerama
+  * Bugfix: Correctly handle unmap_notify events when resizing
+  * Bugfix: Correctly warp pointer after rendering the layout
+  * Bugfix: Fix NULL pointer dereference when reconfiguring screens
+
+ -- Michael Stapelberg, 2009-10-23