Bump syn from 1.0.36 to 1.0.39

[dependabot-preview[bot]]

Bumps syn from 1.0.36 to 1.0.39.

Release notes

Sourced from syn's releases.

1.0.39

• Improve compile time by pre-expanding derives (#885)
• Parse const generic parameters in any order relative to type parameters (#886)

1.0.38

• Accept traits with parenthesized path arguments in impls (#880, thanks @alecmocatta)

1.0.37

• Handle shebang in a way that matches rustc 1.46+ (#876, rust-lang/rust#71487, rust-lang/rust#73596)

  #!//am/i/a/comment
  fn main() {} // ^ shebang
  

  #!//am/i/a/comment
  
  [allow(dead_code)] // ^ not a shebang
  fn main() {}
  

• Accept tuple.0.  0 as a tuple indexing expression (#877)

Commits

• 6c0f9c7 Release 1.0.39
• babacca Merge pull request #887 from dtolnay/consttype
• 2dd1ecc Parse const and type generic parameters in any order
• 9ab293c Update tested compiler repo to nightly 2020-08-18
• 601ec8b Replace remaining use of derives to help compile time
• ba23fd1 Move Copy impls into code generator
• 754a5f8 Simplify lit_extra_traits
• d4dd462 Update codegen for LitBool impls
• 187cc95 Work around rustfmt gen module spacing bug
• c6acef2 Format with rustfmt 2020-07-15
• Additional commits viewable in compare view

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[codecov[bot]]

Codecov Report

Merging #148 into master will decrease coverage by 3.33%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #148      +/-   ##
==========================================
- Coverage   42.37%   39.04%   -3.34%     
==========================================
  Files          25       25              
  Lines        3622     3537      -85     
==========================================
- Hits         1535     1381     -154     
- Misses       2087     2156      +69     

Impacted Files	Coverage Δ
src/py/typedef/clause.rs	13.89% <0.00%> (-7.25%)	:arrow_down:
src/py/term/clause.rs	30.84% <0.00%> (-5.61%)	:arrow_down:
src/py/header/clause.rs	35.16% <0.00%> (-4.66%)	:arrow_down:
src/macros.rs	100.00% <0.00%> (ø)

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[dependabot-preview[bot]]

Looks like syn is up-to-date now, so this is no longer needed.