Prototype implementation of contact API client.
Fix test case name.
create_contact() method and better tests.
Contact deletion and more test improvements.
Contact update and more test improvements.
Fix PEP-8 violation.
Switch to fake-go-contacts for contacts API tests.
Some tests for extras.
Merge branch 'feature/issue-2-experimental-contacts' into develop
Merge branch 'develop' into release/0.1.x
Release 0.1.1.