Handle multipleOf overflow

[Zac-HD]

Fixes #743, by falling back to use of Fractions on float overflow.

This passes both the required and the optional test from json-schema-org/JSON-Schema-Test-Suite#438

[codecov]

Codecov Report

Merging #746 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #746   +/-   ##
=======================================
  Coverage   96.02%   96.02%           
=======================================
  Files          17       17           
  Lines        2664     2668    +4     
  Branches      310      310           
=======================================
+ Hits         2558     2562    +4     
  Misses         87       87           
  Partials       19       19           

Impacted Files	Coverage Δ
jsonschema/tests/test_jsonschema_test_suite.py	93.02% <ø> (ø)
jsonschema/_validators.py	99.54% <100.00%> (+<0.01%)	⬆️

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[Julian]

O the naïveté of our youth -- we bid you farewell...

Thanks :)!

[Zac-HD]

Happy to help!

Guess I'll have to update https://hypofuzz.com/example-dashboard/failing.html, but that's OK... I might just add a link to the issue 😉

[Julian]

Oh. Fun. That looks nice.