integrate with updated actix-{codec, utils}

[robjtede]

PR Type

Bug Fix / Refactor

PR Checklist

Check your PR fulfills the following:

• A changelog entry has been made for the appropriate packages.
• Format code with the latest stable rustfmt

Overview

Integrates with beta releases of actix-codec / actix-utils.

This implementation was made much easier thanks to most places already having an Unpin bound on types. Some traits were changed to receive Pins. One or two Unpin bounds were added. Otherwise no logic or control flow changes were made.

If this PR is approved I think we should move to release non-beta versions of codec and utils before merging this.

[codecov-commenter]

Codecov Report

Merging #1634 into master will decrease coverage by 0.05%.
The diff coverage is 41.66%.

@@            Coverage Diff             @@
##           master    #1634      +/-   ##
==========================================
- Coverage   53.22%   53.17%   -0.06%     
==========================================
  Files         126      127       +1     
  Lines       11796    11809      +13     
==========================================
+ Hits         6279     6280       +1     
- Misses       5517     5529      +12     

Impacted Files	Coverage Δ
actix-http/src/client/connection.rs	10.95% <0.00%> (-0.31%)	⬇️
actix-http/src/error.rs	32.23% <ø> (ø)
actix-http/src/h1/client.rs	64.36% <ø> (ø)
actix-http/src/h1/codec.rs	65.27% <ø> (ø)
actix-http/src/h1/service.rs	48.87% <0.00%> (-0.38%)	⬇️
actix-http/src/h1/utils.rs	0.00% <0.00%> (ø)
actix-http/src/ws/codec.rs	0.00% <ø> (ø)
actix-http/src/ws/dispatcher.rs	0.00% <0.00%> (ø)
awc/src/connect.rs	15.25% <0.00%> (ø)
awc/src/ws.rs	0.00% <0.00%> (ø)
... and 3 more

---

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[JohnTitor]

Looks great, thanks for working on it <3

[robjtede]

@JohnTitor i could do with this one being merged first and getting non-beta releases out so we can use them in this PR.

actix/actix-net#184