The state of Go modules and sentry-go

[rhcarvalho]

I wanted to keep a reference to golang/go#38158 (comment), in case maintaining support for GO111MODULE=off ever becomes troublesome.

At the moment we do not require use of Go modules to use sentry-go, and I see no reason to change it.

Russ Cox estimates ~80% adoption of modules in the open source community in projects with activity in the last 6 months.

At the moment the Modules integration (for collecting and reporting dependencies) depends on Go Module mode, as well as we have Travis jobs to test the multiple combinations of GO111MODULE, GOPATH and where source code lives.