clean up to the inner-join function and destructuring tweak
simplified the select-fields logic
clean up joins
Group all of the functions into separate groups
split in-memory platform into separate files
clean up projection to-generator
clean up grouping logic
remove unused generator
output returns tuples but the ??- unwraps the tuple to just show the values
Merge pull request #7 from bhiles/clean-up-platform

Clean up In-Memory platform