Work on integrating preload support for reference docs
Updates the TESTED_DOC and updates ion-defs
Merge pull request #1185 from lukecampbell/reference-docs

Reference docs
Pin versions in buildout
cleanup of rollups fix
 add cleanup stmt when a data prodsuct is persisted to fix ingestion worker leak
fix site rollups for some sites, one error still exists.
Adds default handling for create_data_product
Merge pull request #1188 from lukecampbell/dp-patch

Adds default handling for create_data_product
Rename SimpleCSVParser to SimpleDelimitedParser
Extends / improves DCU functionality and tests

Adds DCA.clean_up function to enable simplified clean up of open coverages and paused streams

Adds TestSimpleDelimitedParser class with tests for parser functionality.

Minor changes to testmanualupload.yml and testcalcoeff.yml to improve test coverage of SimpleDelimitedParser

Increases coverage of DirectCoverageAccess

Improves warnings when DCA is used outside of context management and tests warnings