Gromet Import PR

[titomeister]

This branch contains a great amount of changes/additions to the GroMEt pipeline.

• Support for attributes was rewritten in CAST, and expanded a little in GroMEt.
• Some modifications for AnnCAST visitors in order to support attributes and importing.
• Import support was updated to better reflect the current way we're handling Imports in GroMEt. We generate CAST for each individual import, and use these to generate GroMEt ImportReferences.
• Adds some helper support for determine when functions are from imported modules or builtins.
• There's still a great deal of the Bucky model that needs to be properly ingested, so code was added to 'guard' against unimplemented features breaking the pipeline.

One known issue is there's a discrepancy with the loops when generating GroMEt for other models. We're aware of this and working on a fix.

[codecov[bot]]

Codecov Report

Merging #324 (262ac91) into master (a1a47f0) will increase coverage by 0.20%. The diff coverage is 28.12%.

@@            Coverage Diff             @@
##           master     #324      +/-   ##
==========================================
+ Coverage   34.36%   34.57%   +0.20%     
==========================================
  Files         113      114       +1     
  Lines       22577    22577              
==========================================
+ Hits         7759     7805      +46     
+ Misses      14818    14772      -46     

Impacted Files	Coverage Δ
automates/program_analysis/CAST2GrFN/cast.py	53.17% <ø> (ø)
...omates/program_analysis/JSON2GroMEt/json2gromet.py	0.00% <0.00%> (ø)
...ates/program_analysis/PyAST2CAST/py_ast_to_cast.py	14.22% <14.28%> (+2.90%)	:arrow_up:
...gram_analysis/CAST2GrFN/ann_cast/annotated_cast.py	69.19% <33.33%> (-1.08%)	:arrow_down:
...omates/program_analysis/PyAST2CAST/modules_list.py	33.33% <33.33%> (ø)
...am_analysis/CAST2GrFN/ann_cast/id_collapse_pass.py	77.38% <35.29%> (-4.44%)	:arrow_down:
...lysis/CAST2GrFN/visitors/cast_to_agraph_visitor.py	16.81% <40.00%> (+0.35%)	:arrow_up:
...lysis/CAST2GrFN/ann_cast/cast_to_annotated_cast.py	77.14% <66.66%> (-0.23%)	:arrow_down:
...nalysis/CAST2GrFN/ann_cast/grfn_assignment_pass.py	80.57% <66.66%> (-0.25%)	:arrow_down:
...lysis/CAST2GrFN/ann_cast/lambda_expression_pass.py	67.54% <66.66%> (-0.01%)	:arrow_down:
... and 7 more

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