Stop on compile error

[leevipietilainen]

Fix #274 by introducing a new variable called stopOnFailure (default true) which allows tests to be run when typescript compile errors are present.

[leevipietilainen]

hmm, postcss tests broke even though I didn't touch postcss module at all.

[erikbarke]

Hey @leevipietilainen, nice work!! This doesn't look like a breaking change (I'm a bit weary of them after #274...), so I guess this could be released as a v5.1.0, thoughts?

[leevipietilainen]

Thanks! Yes, I'm fine with releasing this as v5.1.0.

[darlanalves]

I just started testing in a pet project with karma-typescript and the first thing I bumped into was exactly this problem!

Thanks a lot for your change @leevipietilainen !
I was about to raise an issue and suggest a PR with a similar code :)

[falsyvalues]

Thanks @leevipietilainen!