Bump serde from 1.0.88 to 1.0.90

[dependabot-preview]

Bumps serde from 1.0.88 to 1.0.90.

Release notes

Sourced from serde's releases.

v1.0.90

• Add an attribute #[serde(crate = "path::to::serde")] which replaces the use of extern crate serde in the generated code; this is intended for crates that invoke Serde derives from a macro and need to refer to serde through their own re-export rather than requiring callers to list Serde in Cargo.toml (#1499, thanks @​sgrif)

  #[derive(Deserialize)]
  #[serde(crate = "__tw::codegen::serde")]
  struct S { ... }

  // expands to:
  impl<'de> __tw::codegen::serde::Deserialize<'de> for S {
      ...
  }

v1.0.89

• Implement Serialize and Deserialize for core::cmp::Reverse<T> (#1486, thanks @​vorot93)
• Fix a Clippy lint triggered within generated code involving flatten + deny_unknown_fields (#1492, thanks @​thomaseizinger)

Commits

• 0be7f36 Release 1.0.90
• 4c6cb6e Match on serde_path to handle Some(path) and None
• 82bde8d Format with rustfmt 2019-03-27
• 465392b Merge pull request #1499 from sgrif/sg-custom-serde-path
• f3c6b9f Simplify signature of Container::serde_path
• 2f1945e Refer directly to serde_path in Deserialize impl
• b4d8a55 Change serde_path to crate
• 0e6ce8f Fix for Rust 1.15
• a295c38 Allow #[serde(serde_path = "...")] to override extern crate serde
• 295730b Clippy cyclomatic complexity lint has been renamed
• Additional commits viewable in compare view

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[codecov]

Codecov Report

Merging #34 into master will increase coverage by 0.15%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #34      +/-   ##
==========================================
+ Coverage   72.28%   72.44%   +0.16%     
==========================================
  Files          57       57              
  Lines        3125     3125              
==========================================
+ Hits         2259     2264       +5     
+ Misses        866      861       -5

Impacted Files	Coverage Δ
chain-abci/src/storage/merkle.rs	92.77% <0%> (+6.02%)	⬆️