assertOutput should support ... to avoid spelling out repeated lines

[ktoso]

We often have some preamble that's the same in every method... We don't need to test that everywhere.

Instead we should support a ... wildcard in the expected chunks that skips over lines.

[madsodgaard]

Fixed in #362

[ktoso]

Hah yeah, we should do better including the “resolves #…” when we do PRs so we don’t have to chase down issues later on :)