Use transactionID instead of [TransactionIDSize]byte

[cppcoffee]

Perhaps using transactionID as a type instead of [TransactionIDSize]byte would be easier to read.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.25%. Comparing base (d07109b) to head (733e2a6).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #227   +/-   ##
=======================================
  Coverage   65.25%   65.25%           
=======================================
  Files          27       27           
  Lines        2639     2639           
=======================================
  Hits         1722     1722           
  Misses        907      907           
  Partials       10       10           

Flag	Coverage Δ
go	65.25% <100.00%> (ø)
wasm	41.98% <100.00%> (ø)

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