fix dev dependencies audit + bump to 2.1.1

2.1.0 - see changelog

Merge pull request #187 from chrisben/2.x

Update to 2.x

Fixed tests, added test for 'useCachedBackgroundWithSource' API and b…

…umped version to 1.2.0

Add timeout + prepare 1.1.0

bumped version to 1.0rc2

1.0rc1 - see changelog

bump version

version 0.7.5 -- see changelog