Fixed: WorkflowManager shows results only from first of its pieces

Now I've cleaned up a little, and realized that the previously-committed test
is basically the best way to handle this issue. Let's close it!

Closes #335
Fixed: BWV77 integration test are complete

I finally finished preparing all the hand-counted integration tests for the
infamous "bwv77.mxl" test file.

Closes #327
Update version number to 2.0.0-rc1

If nothing bad happens, I'll make another commit here tagging the 2.0.0 release!