Does not build with Go 1.8?

[danikalmar]

I was trying to build it with Go 1.8.3, and always got the following errors:

../../_vendor/src/github.com/alicebob/miniredis/test.go:10: tb.Helper undefined (type testing.TB has no field or method Helper) ../../_vendor/src/github.com/alicebob/miniredis/test.go:19: tb.Helper undefined (type testing.TB has no field or method Helper) ../../_vendor/src/github.com/alicebob/miniredis/test.go:28: tb.Helper undefined (type testing.TB has no field or method Helper) ../../_vendor/src/github.com/alicebob/miniredis/test.go:37: tb.Helper undefined (type testing.TB has no field or method Helper)

I found this issue, which seems related.

[danikalmar]

I managed to build it successfully with Go 1.9.4.

[alicebob]

As mentioned in #33, fixed with ba1c442

Thanks!