* Allow .NET packages alternate owners
Specifically, this allows a generated package with a enclosing namespace
different then "Pulumi."
* New test case files
* Remove unused import
* Update CHANGELOG_PENDING.md
* Update codegen from master merge
* Use rootNamespace instead of namespace
* publisher overrides Author and "Company" in .NET
* Add publisher propagation to CHANGELOG_PENDING.md
* Fix nits
* Use fmt.Sprintf over +
* Restore sdk_driver.go (mostly)
* Add docs to allLanguages add documentation.
* Update tests from master
* Add rootNamespace to docs
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