Add transaction.data to contexts.trace.data

[cleptric]

Closes #863

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 83.56%. Comparing base (f2d4348) to head (5fc4fd8).

Files with missing lines	Patch %	Lines
tracing.go	0.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #864      +/-   ##
==========================================
- Coverage   83.61%   83.56%   -0.05%     
==========================================
  Files          49       49              
  Lines        5133     5136       +3     
==========================================
  Hits         4292     4292              
- Misses        684      686       +2     
- Partials      157      158       +1     

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