Attribute command retry fix

[Lakitna]

Closes #60

• Tests
• Documentation
• Type definitions
• Ready for merge

[Lakitna]

Will also close #54

[cubanx]

Sorry, not trying to harass, but can I help with this in any way? We want to move up to version 8.3+ of Cypress so we can get access to session stuff, but currently blocked.

If you don't think you can get to it within a week or so, I can do a fork of your code and work off that in the meantime.

Thanks so much for everything!

[Lakitna]

I had a week off last week, hence the delay. Merge is pending (self-) review right now.

I want to release this as part of cypress-commands@2 (milestone https://github.com/Lakitna/cypress-commands/milestone/3) which will also include a breaking change for the order of text() (see #47)

[Lakitna]

@cubanx I just added the changelog with the breaking changes to this branch. You can start looking at potential changes you have to make ;)

I plan to take a last look at things tomorrow before I release it.

[cubanx]

Thanks so much! Really appreciate the work here, and if there's ever something you want me to work on let me know. I am not a super expert here, but I've been around the block a few times :)