* Issue #5147: allow empty values for properties.
* Issue #5147: Allow multiple `-D` options.
* Issue #5147: take advantage (and demonstrate) the new usage of -D.
* Issue #5147: also update windows script and security ones.
* Rewrite of Go Client
* Revert to older version of context.Context
* Clean and bulk up concurrency test.
* Correct {{path}} to {{{path}}}
* change custom date type to string.
* Add APIKey authentication
* Correct missing line from resolving conflicts.
Correct missing line from resolving conflicts.
* Issue #3084: add hideGenerationTimestamp option to Go server generator.
* Issue #3084: use hideGenerationTimestamp in go server sample script.
* Update Go server samples.
