Support for localstorage in a browser to cache the features
EdgeFeatureHubConfig will now hold onto only a single context for server evaluated keys. Once created
it will always give out the same one.
EdgeFeatureHubConfig ensures there is only one connection to the server and only one set of polling will
happen that is under its control. This ensures the React SDK for example will only have one active poll.
removed the alternative log silencing method
added meta-tag support for browsers and a new FeatureHub object to access them
refreshed the documentation to reflect current ways of accessing things
Description
Major new release of the FH JS SDK, bringing:
fixes #137