Improve assertion error message

[bjoluc]

Sorry for this silly PR 😄 I just found the error message "assert failed to validation error(s)" a little confusing. I think "assert failed due to validation error(s)" is a bit clearer.

[tuukkamustonen]

Indeed. Or it could even be just "assert failed due to:". Anyway, this is already better, thanks! :)

(Sorry for the late reply, I have no idea why Github doesn't send me email notifications of this repository. I get notified for all the repositories I'm watching, but the one where I'm actually maintainer doesn't get notified. Crazy. Randomly happened to notice your PR.)

[tuukkamustonen]

Seems like Tarvis builds are not being triggered, I need to check that...

[tuukkamustonen]

I think there were some auth issues after a long period of inactivity. Travis had actually triggered, but would not report status back.

Could you rebase? I want to be sure it works for other users, too, and not just me :|

[bjoluc]

Crazy. Randomly happened to notice your PR

Glad you discovered it anyway! 🎉

Could you rebase? I want to be sure it works for other users, too, and not just me :|

Sure thing!

[coveralls]

Coverage remained the same at 60.194% when pulling 415872a on bjoluc:improve-assertion-error into 9632451 on F-Secure:master.

[tuukkamustonen]

Seems like it worked this time 👍

[bjoluc]

Thanks a lot!

[tuukkamustonen]

Released this (and couple of internal boilerplate adjustments) in 1.2.0 🌷