* interfacer: Move to Go modules.
* interfacer/contrib: remove dep usage.
No longer needed due to the move to Go modules.
* Move src/main.go to cmd/browsh/main.go.
Allows installation with `go install ./cmd/browsh`, no need to specify
output.
* interfacer/src/browsh/firefox: fix browsh.xpi path
* setup_linux_build_env: clean up and update.
- Remove references to dep and GOPATH
- Use code blocks for commands
- Update for new build instructions
This means that there's now a canonical script that allows other
distributers to build Browsh. The only caveat being that the web
extension cannot be built (Mozilla only allows one signed `.xpi` per
version), so it is downloaded.
The shell script in interfacer/contrib/setup_go.sh expands the $GOPATH
variable to download a script to $GOPATH/bin. However, if $GOPATH is not
set, that expands to /bin. If the script is run with root privileges
(accidentally), this will download a "strange" executable to /bin, which
is supposed to be for system executables. If it is run without root
privileges, it gives an (unclear) error about permissions. This commit checks
if $GOPATH exists. If it $GOPATH does not exist, it exits with error code 1.
After moving to Tcell and implementing its screen diff updates, we can
no longer watch STDOUT to get frames during integration tests. Instead
we need to use Tcell's SimulationScreen and which has a GetContents()
method. This is actually also a much more robust way of being able to
see what Browsh actually outputs during testing.
