Only a few versions are returned by 'Choose Go Environment'

[bkmeneguello]

I suggest to add '&include=all' to the download URL at Choose Go Environment, so it could download any version.

[gopherbot]

Change https://golang.org/cl/347032 mentions this issue: src/goEnvironmentStatus.ts: include all versions from golang.org/dl

[hyangah]

Thanks for the PR.
What versions were you interested in seeing in the list?
I wished this allowed easy access to latest RCs or tip the other day.
But I am afraid the list is too long and I hope we can hide very old versions from the list (I am not sure how well the extension supports go versions older than 1.12 at this stage).

[bkmeneguello]

Well, I'm not really aware of the extension limitations on older versions, but I recently had to install the 1.13 version, which made me to think about this.
Since we cannot determine the use cases, and since it's possible to install all those versions, I think we should allow.

[hyangah]

What do you think if we have an option that takes a go version string and downloads that version?
The list from dl with include=all is too long. Without clear use cases and justification, I'd like to avoid it.