Extension ID uniqueness

[nhedger]

It seems that the Marketplace changed the uniqueness criteria for extension identifiers.

While attempting to publish an extension with the identifier nhedger.vscode-extension-template, I got an error saying that the identifier was already used, which sounded weird because I had no other extensions published under that name.

After reading #354, I understand that the publisher is no longer taken into account for the uniqueness and I was able to solve the problem by using the nhedger-vscode-extension-template name, but it makes the identifier needlessly long.

nhedger.nhedger-vscode-extension-template

Was there a communication made to that effect? The current documentation for creating VS Code extensions does not seem to mention it.