Update debian changelog and bump package version.

Change-Id: I80bb5a73e2f9b7c12c6b51152fa7d4c1bc0b3145

Update version

Change-Id: If3ebd9b13a65c2717ead6df25dba48df3fb62a1e
(cherry picked from commit bbad60d7476dfd3c49c3105c334c4d46d88f72d5)

Use system-wide python to run desktop check scripts

Change-Id: Ideeb546005f4b7b3ed8ee8125f7a9ec2d841703e

Direct support for grayscale images.

Grayscale images are interpreted by VisionBonnet as RGB where all
channels are the same. This is just an optimization to send 3 times less
data over SPI.

Change-Id: I0322cbff8381f295772b1eadead0a4d0d7f335fc

Update to Cloud Speech v1 (google#206)

The v1beta1 endpoint has been shut down, so this is necessary for using
the Cloud Speech demo now.

See google#205.

Python API and example source code for VisionKit

This commit extends the original AIY projects
python API to include drivers, APIs and demos
for the AIY Projects Vision Kit.

https://aiyprojects.withgoogle.com/vision/