Fluentlenium github readme suggests not using fluentlenium-festassert because festassert is unmaintained. Thus moving to fluentlenium-core. This also results in a smaller set of dependencies for most folks who don't necessarily use festassert anyway. End users can easily add back their own dependency on festassert if they wish
Merge pull request #3095 from benmccann/removefest

Replace fluentlenium-festassert with fluentlenium-core