* fix the new div2n1n_vartime on 32-bit - regression from #286
* remove unnecessary defensive programming
* reactivate 32-bit CI to check on #244
* 32-bit: centralize OS, ISA and env variable config
* enable assemble on x86 32-bit
* stash prep for Barret Reduction
* benches lost in rebase
* fix vartime reduction
* some improvement and fixes on reduce_vartime
* Fuse reductions when converting to Montgomery + use window=1 in powMont for small exponents. ~2.7x to 3.3x accel
* modexp: Introduce a no-reduction path for small base+exponent compared to modulus. Fix DOS
* optim for padded exponents
* remove commented out code [skip ci]
* Missing noInline for allocStackArray
* common error model for serialization of BLS signatures and KZG objects
* [KZG] add Ethereum's test vectors [skip ci]
* dump progress on KZG
* Stash: trusted setup generator
* implement cache optimized bit-reversal-permutation
* Add generator for the Ethereum test trusted setups
* implement naive deserialization for the trusted setup interchange format
* implement verify_kzg_proof
* Add test skeleton of verify KZG proof
* rebase import fixes
* move tests
* move threadpool to root path
* fix hints and warnings, print nim versions for tests for debugging the new strange issue in CI
* print nim version
* mixup on branches
* mixup on branches reloaded
