Bump version to v0.3.4

Changes from v0.3.3:

- config improvements (progressive config load, greater control,
  transparent errors, new legacy config loader) and bug fixes
- tests improvements (testing utilities, config file for live tests)
- performance improvements (responsible use of resources, internally and
  in examples)
- dwave cli fixes
- docs/package/setup structural and visual updates

dwave/cloud/package_info.py

@@ -1,6 +1,6 @@
 __packagename__ = 'dwave-cloud-client'
 __title__ = 'D-Wave Cloud Client'
-__version__ = '0.3.3'
+__version__ = '0.3.4'
 __author__ = 'D-Wave Systems Inc.'
 __description__ = 'A minimal client for interacting with D-Wave cloud resources.'
 __url__ = 'https://github.com/dwavesystems/dwave-cloud-client'