chore(coverage): add coverage testing to project
feat(extract-tags): move to dgeni-packages project

BREAKING CHANGE: the extractTagsFactory is now moved to the dgeni-packages
project, because it is specific to the way that tags are parsed and extracted
in that project.  If you rely on this then you should add dgeni-packages
as a dependency to your project.
test(*): improve test coverage
chore(version) bump to v0.2.0