allow the use of wildcards in inputs

This implementation works but can be slow when more than one wildcard
is used.
ins has been changed to input-paths
explore the idea of a map which tracks changes
get tracking map working properly
clean up metadata on ascent
record changes in a separate map instead of metadata
record key removal
strip away associated TrackingMaps, only the top level contains changes
implement dataflow with the tracking map
add topo-sort test
use :inspect to record changes where further comparison is necessary
implement continue and effect phase
rename flow functions
dataflow messages are not the same as app messages

The dataflow namespace should not know anything about app message
format. We may not even call them messages in the context of a
dataflow.
implement the emit phase
add tests for emit phase and clean up tests
get a complete dataflow working
add copyright
change :input key to :input-adapter
create test-run-sync! for running tests based on app-next