Going to release zxing 3.3 / new BS app soon

[Sean Owen]

I'm planning to cut a release of zxing, version 3.3.0, quite soon. It has been a long time since the last release. There are no major changes, but plenty of small fixes. I will also try to release a new version of Barcode Scanner to match.

Recently I have tried to significantly improve code coverage and resolve some long-standing issues in the build, and those are resolved now, so it seems like a good time.