Update notes for BS 4.7.5

Add what's new for 4.7.4 and update proguard

[maven-release-plugin] copy for tag zxing-3.2.1

[maven-release-plugin] copy for tag zxing-3.2.0

[maven-release-plugin] prepare for next development iteration

[maven-release-plugin] copy for tag zxing-3.1.0

Tweak text size in results

Suppress two Android lint warnings

Initial commit of Google Glass GDK app

[maven-release-plugin] copy for tag zxing-3.0.1