Add PatchAsync overloads

[mungojam]

Description

• Fixes Add PatchAsync overload #528

I made both tests and extension methods by copying the PostAsync equivalents. In theory they could share the same underlying functionality.

I really like how your integration tests are organised. Makes it very clear.

Checklist

• I have squashed my commits into a single one with a message that aligns with the contributing guidelines
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

[FantasticFiasco]

Thanks! I'll take a look at the code tomorrow, and then proceed to release a new version for you.

[mungojam]

Thanks! I'll take a look at the code tomorrow, and then proceed to release a new version for you.

Thanks, I'm also working on the GetStringAsync addition. I've done the code but currently working out what to do with the tests which are more complicated than for PatchAsync. I should be able to work something out though.