Adding possibility to simple inspect future polling

[riomus]

I have added simple inspection future that only logs status and error instead of the whole content of future.

[skade]

Hi, thanks for the PR :).

I'm not sure I agree with the path of implementation, as it requires to switch out the future in use if you want to choose a different strategy.

There's two ways I see how that could be amended:

• Make your method the default way for debug! level and have the "old" way of working available under trace! level.
• Use a feature-flag to switch between the implementation.

I slightly err towards the first, but an obvious problem there is that trace! includes debug!, so every action might be logged twice.

[riomus]

Hi,

I think that going with 1 option would be good. There could be also an implementation that checks what kind of log level is enabled and then logs appropriately (only once). Ther will be also two implementations because of trait bounds (some items and errors are not implementing Debug)