Go Caveats

I don’t particularly love that this isn’t the cleanest set of warnings in the world, but the combination of Homebrew, zsh & Go seems to really screw up the setting of the GOPATH & the $PATH as recommended. (*The problem seems to replicate across any non-default shell*). I’ve chucked in a few lines consequently about how to handle non-default shells.

I’ll respect if this somewhat cumbersome explanation is rejected, but hopefully it’s useful to include.
Cool. I appreciate that. Will bear it in mind for the future :smile:. If you're not a go (no pun intended) on the Mercurial line either this can be closed.