feat: validate chunk size is a multiple of 64 bytes

[rootulp]

Closes #235

[codecov]

Codecov Report

Merging #246 (3a4f72a) into main (658af68) will increase coverage by 0.14%.
The diff coverage is 84.61%.

@@            Coverage Diff             @@
##             main     #246      +/-   ##
==========================================
+ Coverage   78.30%   78.44%   +0.14%     
==========================================
  Files           7        7              
  Lines         553      566      +13     
==========================================
+ Hits          433      444      +11     
- Misses         73       74       +1     
- Partials       47       48       +1     

Impacted Files	Coverage Δ
codecs.go	50.00% <ø> (ø)
extendeddatasquare.go	73.48% <77.77%> (+0.31%)	⬆️
leopard.go	80.95% <100.00%> (+2.00%)	⬆️

[cmwaters]

If we expect codecs to only support one chunk size (i.e. 64 in this case), wouldn't be better if the interface was instead ChunkSize() int and we compared that value with the chunk size provided.

[rootulp]

If we expect codecs to only support one chunk size (i.e. 64 in this case), wouldn't be better if the interface was instead ChunkSize() int and we compared that value with the chunk size provided.

We expect codecs to support more than one chunk size. In this case, leopard supports chunks of size 64, 128, 192, etc.

In other words, leopard supports chunks that are a multiple of 64 bytes.