support writing the same Frame to multiple nodes (#66)

[aler9]

Fixes #66

[codecov]

Codecov Report

Merging #72 (2a7eb0a) into main (140deff) will decrease coverage by 0.79%.
The diff coverage is 56.16%.

@@            Coverage Diff             @@
##             main      #72      +/-   ##
==========================================
- Coverage   81.89%   81.11%   -0.79%     
==========================================
  Files          26       26              
  Lines        1994     2012      +18     
==========================================
- Hits         1633     1632       -1     
- Misses        282      295      +13     
- Partials       79       85       +6     

Files Changed	Coverage Δ
node.go	69.48% <54.92%> (-5.32%)	⬇️
node_heartbeat.go	80.39% <100.00%> (ø)
node_streamrequest.go	72.50% <100.00%> (ø)

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