Is your feature request related to a problem? Please describe.
To access the Wago import version you have to go through. WeakAurasSaved.displays[aura_env.id]["semver"]. I maintain a WeakAuras that communicates with other people through C_ChatInfo.SendAddonMessage and it's important to have backwards compability for people who might not regularly update their WA's as not to create excessive amounts of Lua errors. Therefore I'm dependant on what version of the WA the player is using.

Describe the solution you'd like
Would be great if this was stored in aura_env like the id for example.

Describe alternatives you've considered
Like I said, I use WeakAurasSaved.displays[aura_env.id]["semver"] as of right now but that's not optimal. I have been told that WeakAuras.GetData is better but I havn't explored that option yet.

There are solutions to your problem that don't require changing WeakAuras addon, like define your own version counter or change SendAddonMessage prefix or message.