4.7.3

[4.7.3] - 2019-04-29

Changed:

• Import paths in subpackages and tests have been changed from gopkg.in/launchdarkly/go-client.v4 to gopkg.in/launchdarkly/go-server-sdk.v4. Users of this SDK should update their import paths accordingly.
• This is the first release from the new launchdarkly/go-server-sdk repository.