docs: Note version 0.3.0 release

Signed-off-by: Kevin O'Connor <[email protected]>

docs/Releases.md

@@ -1,6 +1,29 @@
 History of Klipper releases. Please see
 [installation](Installation.md) for information on installing Klipper.
 
+Klipper 0.3.0
+=============
+
+Available on 20161223. Major changes in this release:
+
+* Improved documentation
+* Support for robots with delta kinematics
+* Support for Arduino Due micro-controller (ARM cortex-M3)
+* Support for USB based AVR micro-controllers
+* Support for "pressure advance" algorithm - it reduces ooze during
+  prints.
+* New "stepper phased based endstop" feature - enables higher
+  precision on endstop homing.
+* Support for "extended g-code" commands such as "help", "restart",
+  and "status".
+* Support for reloading the Klipper config and restarting the host
+  software by issuing a "restart" command from the terminal.
+* Stepper performance improvements (20Mhz AVRs up to 158K steps per
+  second).
+* Improved error reporting. Most errors now shown via the terminal
+  along with help on how to resolve.
+* Several bug fixes and code cleanups
+
 Klipper 0.2.0
 =============