Merge pull request #569 from cornerstonejs/fix/broken-build-circle

fix(circleci): update circleci/node image

feat: Add back the addToBeginning to the PoolManagers (#558)

feat: Add requestPool to support changes in WADO Image Loader (#557)

* chore(events): Add IMAGE_LOAD_PROGRESS event enum

ci: switch back semantic-release and just tag the previous using the …

…default format

docs: setDefaultViewport added to changelog

Merge pull request #312 from dannyrb/master

fix: making it easier to listen for the ELEMENT_ENABLED event

feat(uuid): Added a global UUID to cornerstone enabled elements to al…

…low for easy tracking of elements from other libraries (e.g. cornerstoneTools). (#310)

Version 2.2.4