DefaultTestSet fields are const in 1.13, don't try to change 'em

[kleinschmidt]

This is probably the simplest possible fix to #136 , which just does not attempt to set the elapsed time on the default test set since those fields are now const. I've updated the reference tests for a few of the tests; the only difference is that there's no trailing new line in how some of the outputs are printed.

Finally, we were not testing on versions of julia that we support and have different reference outputs for; I've added CI jobs for every supported minor version of Julia on ubuntu, keeping windows only on min/1/nightly.

fixes #136

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 92.88%. Comparing base (be0d517) to head (6ca3275).
⚠️ Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
src/testsets.jl	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #137      +/-   ##
==========================================
+ Coverage   92.73%   92.88%   +0.14%     
==========================================
  Files           7        7              
  Lines         482      492      +10     
==========================================
+ Hits          447      457      +10     
  Misses         35       35              

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[kleinschmidt]

Only failures appear to be that the test failures don't pretty print in XML with a trailing line for some reason. If it were me I'd just update the reference tests since this doesn't seem like a meaningful change...

[oxinabox]

If it were me I'd just update the reference tests since this doesn't seem like a meaningful change...

Go ahead

[oxinabox]

Merge once you fix CI

[omus]

Looks like there is a minor test flaw but othewise looking good

[tz-lom]

@kleinschmidt are you planning to follow up on this?
do you need any help?

[kleinschmidt]

I've gone ahead and added matrix entries for all supported minor versions of Julia on ubuntu, and test min/1/nightly on windows.