add release notes for 3.ε-bf2

RELEASE-NOTES-3.e-bf2

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+Release notes for i3 v3.ε-bf2
+-----------------------------
+
+This is the second bugfix release (bf1) for version 3.ε of i3. Current
+development focuses on the tree branch which contains a major refactoring.
+Because (as usual) there are still bugs in the stable versions, though, we
+felt it was a good idea to have this bugfix release.
+
+This release contains only bugfixes and is considered stable.
+
+All users of older versions are encouraged to upgrade as soon as possible.
+
+Thanks for this release go out to fernandotcl, Marcus, Stefan, dbp, quaec.
+
+A list of changes follows:
+
+  * Bugfix: Don’t crash when a dock client starts up with nonsense coordinates
+  * Bugfix: i3-wsbar: properly catch errors when writing to child processes
+  * Bugfix: Render decorations of single window in tabbed/stacked container
+  * Bugfix: Don't draw stacked decors overlapping a fs window
+  * Bugfix: Replay unhandled pointer events
+  * Bugfix: Validate the ws number for client assignment
+  * Bugfix: use the global root variable, don’t get the first one
+  * Bugfix: Opera flash plugin no longer prevents in-page focus changing
+  * Support for custom bg colors for clients
+  * Bugfix: Fix possible rounding errors
+  * Bugfix: Don’t setup event handler when RandR base event is not set
+  * Bugfix: Properly call init_workspaces() when RandR is known but not present
+  * Bugfix: Correctly count variables when parsing the configfile
+
+-- Michael Stapelberg, 2011-01-19