Retry logic

[LeoPatOZ]

Resolves #112
Towards #66

1. Do we want to use any other features of backoff here?
2. Is this sufficient logging?

[0xNeshi]

Nice API, will be useful for multi-provider support (see #6 ).
Left comments mostly related to refactors and nits 👍

[0xNeshi]

1. Do we want to use any other features of backoff here?

Do you think any other features would be useful?

2. Is this sufficient logging?

For now any logging is great. We'll review as part of #52

[LeoPatOZ]

1. Do we want to use any other features of backoff here?

Do you think any other features would be useful?

Not immediately obvious. I think if we want to support different retry mechanisms we can do that later.

[0xNeshi]

Excellent work. As discussed, we'll hold of on merging until #140 is ready to be merged, too, so they can be released together.

[0xNeshi]

Awesome work 🚀 Let's wait for the next release before merging