Remove reference cycles between MockFactory and ModelFactory.#918

Merged

aphearin merged 7 commits intoastropy:masterfrom rainwoodman:mock-model-cycles

May 2, 2019

+38-2

Commits on Jul 3, 2018

Commits on Jul 4, 2018

Use a python 2 compatible syntax.
rainwoodman
committed
add a memory leak test.
rainwoodman
committed
skip windows.
rainwoodman
committed
Added forgotten import of sys module
Andrew Hearin
committed

Commits on Jul 5, 2018

Add comments about the cycles and assumption.
rainwoodman
committed