add min_runtime parameter to detect_lostruns and fix unit tests
move default FireTasks to main
Merge pull request #67 from materialsvirtuallab/master

Fix for FireTaskMeta.
update contributors
update to v0.89
update DOI
Use monty's loadfn, which guarantees usage of CLoader when available for speed.
Merge branch 'master' of github.com:materialsproject/fireworks