Adding go modules support

[eliben]

Please consider adding Go modules support by running "go mod init github.com/fortytw2/leaktest" and committing the resulting go.mod file.

[fortytw2]

@eliben leaktest should support go modules anyways, I'm pretty sure.

[eliben]

As a user of leaktest, it worked fine within a module environment - as you have properly tagged semver releases. Thanks!

It may still be a good idea to add a trivial go.mod going forward, however. See https://github.com/golang/go/wiki/Modules#should-i-still-add-a-gomod-file-if-i-do-not-have-any-dependencies for more details.

[fortytw2]

Great! Thanks for the link too, I'll keep this open and come back to it eventually :) Since leaktest has no external dependencies and likely will continue working for a long time without a go.mod, I'd rather like to avoid adding files of dubious benefit to the repo / anyone, really.