v0.6.0

This release includes an updated version of libcalico - which crucially has updated versions of requests and urllib3. This should fix issues around mixed IP SANs and DNS SANs

This release also includes the following PRs
#82 Better logging around json decode errors
#84 Add copyrights
#79 Test for API server reconnection fix (#77)
#86 Remove CircleCI, just use Semaphore