Sort jars before searching for mainClass

[jayvdb]

Fixes #90

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.68%. Comparing base (89d20d1) to head (07c9a90).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #97      +/-   ##
==========================================
+ Coverage   94.53%   94.68%   +0.14%     
==========================================
  Files           6        6              
  Lines         879      903      +24     
==========================================
+ Hits          831      855      +24     
  Misses         48       48              

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[jayvdb]

ping @ctrueden . I would like to see this merged as py2many currently depends on it for its Kotlin support. c.f. https://github.com/py2many/py2many/blob/main/tox.ini#L31

I would like to do a release soon with a released jgo added as a dependency

[ctrueden]

@jayvdb Thanks very much for digging into this and providing a fix. Your solution is succinct and clever. It bothers me that we don't just ask Maven directly for the actual filename of the primary endpoint somehow; but I cannot immediately come up with a concrete example where the sort fails to do the right thing (maybe something with classifiers? but it's a vanishingly small fraction of use cases). So let's just go for it!