Allow since setting to override state file if newer

[jwodder]

@yarikoptic Should we release on this PR? I'm a little worried that if we make too many PRs in a single release, we'll hit this auto bug.

[codecov-commenter]

Codecov Report

Merging #102 (0249d52) into master (3bce3d1) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #102   +/-   ##
=======================================
  Coverage   44.45%   44.45%           
=======================================
  Files           9        9           
  Lines         893      893           
  Branches      134      134           
=======================================
  Hits          397      397           
  Misses        495      495           
  Partials        1        1           

Impacted Files	Coverage Δ
src/tinuous/state.py	100.00% <100.00%> (ø)

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[yarikoptic]

Thank you
Let's release then, added the label, and will merge. CI isn't fully happy ATM though (didn't check). That auto bug though worries me since in Datalad master branch is long lived between its releases