Update date in changelog

Add unit tests for issue #25 fix and ready for 1.1.8 release

Fix issue #29 and prepare for 1.1.7 release

Fix issue #22: Filter out PWAs.

Update changelog, manifest for 1.1.5. Add a package script to create …

…the zip.

Merge pull request #13 from codedread/1.1.4

1.1.4 branch merge into mainline