Update changelog for v0.8.0 (#233)

* Update changelog for v0.8.0

* Update changelog

Author: WasabiFan

debian/changelog

@@ -1,3 +1,18 @@
+python-ev3dev (0.8.0) stable; urgency=medium
+
+  [Denis Demidov]
+  * Add option to not set mode before reading sensor value
+  * Return a tuple for multiple values from a sensor property
+  * Add ColorSensor.raw() method to get all color channels at once
+  * Merge NXTMotor functionality into LargeMotor class and remove NXTMotor
+  * Distribute fonts from xfonts-75dpi in PIL format and expose them in
+    code
+  * Replace special sensor methods with properties for the sake of consistency
+    (breaking change!)
+  * Provide waiting functions for motors.
+  * Make implementation of Led timer-based trigger more robust.
+
+ --
 python-ev3dev (0.7.0) stable; urgency=medium
 
   [Denis Demidov]