Add broadcasting over containers, close #20

[jverzani]

Close issue #20

For GiacExpr

• adds broadcastable trait (needed to reach into subtype). Returns object, Vector, or Matrix
• Changed adjoint definition (also reached into subtype)
• Modify size to reflect if VECT or matrix
• Modify transpose to adjust for Giac vectors being row vectors (not column vectors)

For GiacMatrix

• added axes method
• added IteratorSize trait
• added broadcastable
• added adjoint
• added method for map based on :apply

Added some tests

Still has an issue (broadcasting over a scalar variable) that I can't resolve (as far as I could tell the issue resolves to the underlying type not carrying enough detail about an object)

Note:

This changes the behavior of collect(M::GiacMatrix) to return a Matrix, not a vector, hence the broken test. (Which should be removed, but I wanted to flag the change.)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.31%. Comparing base (681f1ad) to head (40555a7).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #33      +/-   ##
==========================================
+ Coverage   79.76%   80.31%   +0.55%     
==========================================
  Files          23       23              
  Lines        2891     2921      +30     
==========================================
+ Hits         2306     2346      +40     
+ Misses        585      575      -10     

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.38%. Comparing base (681f1ad) to head (237095c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #33      +/-   ##
==========================================
+ Coverage   79.76%   80.38%   +0.62%     
==========================================
  Files          23       23              
  Lines        2891     2932      +41     
==========================================
+ Hits         2306     2357      +51     
+ Misses        585      575      -10     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.