Pre-populate relations

[brettwillis]

Closes #45

• [x] Configuration API
• [ ] Store target data when updating source document
• [ ] Update data in source document when updating the target
• [ ] Deep (multi-level) populating
• [ ] Enforce attribute overlap rules (i.e. attribute called name.first can't overlap with attribute called name)

[github-actions[bot]]

Test results

Test suite	flatten_all	flatten_mixed_src	flatten_mixed_target	flatten_none
Total	121 / 149 (Δ 0)	33 / 58 (Δ 0)	33 / 58 (Δ ?)	121 / 149 (Δ +2)

[codecov[bot]]

Codecov Report

Merging #46 (5dd2469) into master (7e85038) will not change coverage. The diff coverage is n/a.

:exclamation: Current head 5dd2469 differs from pull request most recent head 13ff139. Consider uploading reports for the commit 13ff139 to get more accurate results

@@           Coverage Diff           @@
##           master      #46   +/-   ##
=======================================
  Coverage   75.02%   75.02%           
=======================================
  Files          25       25           
  Lines        1754     1754           
  Branches      504      504           
=======================================
  Hits         1316     1316           
  Misses        438      438           

Impacted Files	Coverage Δ
src/index.ts	90.38% <ø> (ø)

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[brettwillis]

Project no longer in active development