Upgrade summary dependency to 1.0

[Bjarke Felbo]

Hey @AndreasMadsen, nice stats packages you've made!

We'd like to use both this and https://github.com/AndreasMadsen/summary 1.0 in the same codebase. However, this package uses summary 0.3.x. Can you update the dependency?

[Andreas Madsen]

Hi :D

Thanks for point this out. I've fixed some things in summary. The latest version is now version 2.0.0 and I've updated ttest accordingly.

[Bjarke Felbo]

Awesome, thanks! 🙌