Remove Sized Bound for web::Data

[PeterUlb]

PR Type

Improvement

PR Checklist

• Tests for the changes have been added / updated.
• Documentation comments have been added / updated.
• A changelog entry has been made in CHANGES.md
• Format code with the latest stable rustfmt

Overview

See #1710. It's now possible to use Arc as a source for constructing web::Data. Arc itself already supports it, so the Data wrapper should too. Otherwise there's yet another wrapper required.

Closes #1710

[codecov-commenter]

Codecov Report

Merging #1712 into master will increase coverage by 0.05%.
The diff coverage is 87.50%.

@@            Coverage Diff             @@
##           master    #1712      +/-   ##
==========================================
+ Coverage   53.47%   53.53%   +0.05%     
==========================================
  Files         125      128       +3     
  Lines       11969    11970       +1     
==========================================
+ Hits         6401     6408       +7     
+ Misses       5568     5562       -6     

Impacted Files	Coverage Δ
src/data.rs	94.39% <87.50%> (-0.56%)	⬇️
actix-http/src/header/common/accept.rs	0.00% <0.00%> (ø)
actix-http/src/header/common/allow.rs
actix-http/src/header/common/if_modified_since.rs	0.00% <0.00%> (ø)
actix-http/src/header/common/etag.rs	0.00% <0.00%> (ø)
actix-http/src/header/common/if_none_match.rs	0.00% <0.00%> (ø)
...ctix-http/src/header/common/if_unmodified_since.rs	0.00% <0.00%> (ø)
actix-http/src/header/common/mod.rs	10.00% <0.00%> (+2.30%)	⬆️

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[robjtede]

Makes sense given this is a glorified Arc 👍