Switch test file from jld2 to daec

[jasonjensen]

This PR simply replaces our single jld2 test file with a daec file and removed the JLD2 dependency from the package.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.11%. Comparing base (67de858) to head (4907bc3).

❗ Current head 4907bc3 differs from pull request most recent head 6f2a708

Please upload reports for the commit 6f2a708 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #53      +/-   ##
==========================================
+ Coverage   89.06%   89.11%   +0.04%     
==========================================
  Files          31       31              
  Lines        2305     2305              
==========================================
+ Hits         2053     2054       +1     
+ Misses        252      251       -1     

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