* clang-format
* add `'` seperator to hex constants
fix bad seperator
clang-format
* remove impossible validation
add parenthesis
* pre-increment `it`
* add leading 0
* use boost_regex
* add leading 0
* `const` after declare variable
* clang-format
* add extra check on std::optional
* move guard
* add test
* update test to match
* rename `txnIDfromIndex` -> `txnIdFromIndex`
* update test to match guard
* fix test naming
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Co-authored-by: Richard Holland <richard.holland@starstone.co.nz>