Bump version to 1.6.6
Fix language code for Chinese localization
Bump version to 1.6.4
Add release notes for 1.6.3
Bump version to 1.6.2
Use GUID identifier when can't determine the host name
Merge pull request HangfireIO#614 from HangfireIO/dev Release 1.6.0
Add project-specific release notes for 1.5.9
Disable immediate execution of a keep-alive query in distributed locks
Add release notes for 1.6.0-beta3