Pare down repo

[robnagler]

Currently the repo is 30MB (uncompressed) with several files over 1MB (mostly test data). This makes cloning slow, which slows down CI , CD, and pulls by 3rd parties. Consider keeping test data in separate repo with dynamic pulls when test run or simply paring it down (large test files are probably not essential to validating package function).

[nneveu]

Definitely doable. I'm ok w/ moving test data to a separate repo.