__init__ must be pub

[g-r-a-n-t]

What was wrong?

closes #353

See #353 (comment)

How was it fixed?

Throw a compiler error if __init__ is not public.

My thinking is that __init__ should either always be public or not public. If there are good reasons to go with always not pub, then I can modify this PR to do the opposite.

To-Do

• OPTIONAL: Update Spec if applicable

• Add entry to the release notes (may forgo for trivial changes)

• Clean up commit history

[codecov-commenter]

Codecov Report

Merging #435 (5859273) into master (60cf4f1) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #435      +/-   ##
==========================================
+ Coverage   86.10%   86.13%   +0.02%     
==========================================
  Files          71       71              
  Lines        4729     4738       +9     
==========================================
+ Hits         4072     4081       +9     
  Misses        657      657              

Impacted Files	Coverage Δ
analyzer/src/traversal/functions.rs	94.26% <100.00%> (+0.34%)	⬆️

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[sbillig]

👍