Closes#13228
It is currently unused and requires an old version of the `source-map` package. This old version conflicts with the use of newer versions that are required to provide the necessary functionality and performance within the published packages.
It wasnt checking the staging area. It also now shows the packages that will be
tested.
Filter and Seed are arguments that are directly passed to Jasmine. They can be
used to reproduce tests.
Between the merge of master and the current branch. This might catch a bit
more but it will work more consistently (especially compared to using the
hash).
