feat: support rollback by N blocks

feat: support rollback by N blocks

feat: support rollback by N blocks

chore: update to Go 1.26.2 (#11)

chore: update to Go 1.26.2 (#11)

chore: improve error handling, add tests

no-panic

Merge commit from fork

* add VaidateBasic to BitArray to ensure Bits and len(Elems) are valid

* call ValidateBasic on BitArrays when receiving as a msg from exteranl nodes

* enfore SetIndex is not setting out of bounds

* add guard to getNumTrueIndices

getNumTrueIndices will index out of bounds if Bits and Elems have a
mismatch where len(elems) != (bits+63)/64, this guard makes it simply
return 0 if this mismatch is present

* changelog

* fix missing import for v0.38.x

* update changelog for release of v0.38.19

* remove duplicate bug fixes from unreleased

* fix changelog date

* fix lint

* fix expected error string in test

chore: ignore genDocHash since we modify it

chore: change log levels of noisy logs