version 0.7.3
version 0.7.3

- gpio: export free gpios to user
- fix minor errors and warnings
- display error on module window

Signed-off-by: Sanjay Singh Rawat <da0109ea6cf60988b7173c09a33cf15cf06ce89c@linaro.org>

gromaudio/android_external_powerdebug,gromaudio/android_external_powerdebug,yinquan529/platform-external-powerdebug,yinquan529/platform-external-powerdebug