Tests update

[vbuberen]

This PR updates tests to be less flaky, fixes some typos and adds a new changelog entry.

After my previous PR merge I saw that tests failed https://github.com/dinko-pehar/mock_data/runs/2619656817
In logs we can see that it was due to one of mockLocation tests having some conditions which aren't really guaranteed to always get the same result. So I fixed it.

Along with that I found a few small typos in tests names, etc.

@dinko-pehar Could you also let me know if you plan to release a null-safety update to pub.dev? Would be good to have it sort of officially available to projects, like the one I am currently working on.

[dinkopehar]

Hey @vbuberen

Thank you again for contributing. Yeah, I saw some tests failed but didnt find time to explore mockLocation since it isn't a feature I created.
I will try to release it tomorrow I hope.
Has everything set up for v2 by the looks of it ?

[vbuberen]

I don't really know about your roadmap, but I think that yes, everything is ready for v2, since the main reason for major version bump is null safety migration.

I would improve tests as you suggested in #7, but it can be done later as not really influences the package at the moment.

[dinkopehar]

Tests pass and it's merged into master . I'll release this tomorrow and notify you here.

[dinkopehar]

@vbuberen It's released 🎉 🚀
Thank you for your help and for using it in first place. If you have any questions, feel free to ask.

[vbuberen]

Thank you as well for creating it in the first place.