Add some helper functions to StatusCode to more closely match reqwest

[mon]

Reqwest's status codes have useful methods like is_client_error and is_redirection. It would be nice if nyquest implemented these too. Just a small speedbump I encountered when porting my reqwest app.

[bdbai]

Yup that's something good to have. Thanks for highlighting it!

Just a little reminder regarding redirection, since right now there is no such option to toggle "follow redirection" of the client nor are there tests, the behavior is not specified if a client encounters 3xx requests.

[mon]

Can I bump this for a crates.io release? Would love to move away from a git reference in my cargo.toml :D

[bdbai]

Hi @mon, sorry for keeping this not published for a bit longer while... Actually I am planning to combine the upcoming two breaking changes i.e. stream download and stream upload in one release, however we are getting blocked from upstream (see alexcrichton/curl-rust#602). Given the blocker might not be resolved very soon, probably I will publish what we have right now without stream upload implementations.

[mon]

Understandable, thanks for the quick reply! Hopefully upstream manages to merge before you go rollback the streaming fixes.

[bdbai]

@mon we've just released 0.2.0 here https://github.com/bdbai/nyquest/releases/tag/nyquest-v0.2.0 . Feel free to try it out!

[mon]

Works beautifully! Still blown away at the size reduction in my binary ^_^

[bdbai]

@mon since you mentioned binary size, may I ask if you have observed increased binary size after upgrading to 0.2.0?

[mon]

It's actually 2KiB smaller than last time, but I last built on May the 4th, with a rustc one version behind the current one. Different is basically nothing!