Support chrono::NaiveDateTime for TimestampSeconds and variants

[jonasbb]

Closes #351

bors merge

[codecov]

Codecov Report

Merging #389 (97260a4) into master (043c6da) will increase coverage by 0.44%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #389      +/-   ##
==========================================
+ Coverage   75.15%   75.60%   +0.44%     
==========================================
  Files          47       47              
  Lines        2858     2910      +52     
==========================================
+ Hits         2148     2200      +52     
  Misses        710      710              

Impacted Files	Coverage Δ
serde_with/src/lib.rs	75.00% <ø> (ø)
serde_with/src/chrono.rs	66.01% <100.00%> (+2.10%)	⬆️
serde_with/tests/chrono.rs	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 043c6da...97260a4. Read the comment docs.

[bors]

Build succeeded:

• Rustsec Audit
• Tests result