Re-introduce a token invalidation mechanism

[elinorbgr]

No description provided.

[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (3cb03fb) 86.87% compared to head (71b6e63) 86.65%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #158      +/-   ##
==========================================
- Coverage   86.87%   86.65%   -0.23%     
==========================================
  Files          14       16       +2     
  Lines        1829     1933     +104     
==========================================
+ Hits         1589     1675      +86     
- Misses        240      258      +18     

Flag	Coverage Δ
macos-latest	85.74% <94.35%> (-0.20%)	⬇️
ubuntu-latest	86.21% <94.35%> (-0.21%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/io.rs	74.07% <100.00%> (+0.13%)	⬆️
src/list.rs	100.00% <100.00%> (ø)
src/sys.rs	92.18% <100.00%> (-6.31%)	⬇️
src/token.rs	100.00% <100.00%> (ø)
src/loop_logic.rs	86.66% <83.60%> (-1.01%)	⬇️

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