Change distance for dwithin

[LePetitTim]

No description provided.

[codecov]

Codecov Report

Merging #115 (ba35b44) into master (4bac943) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #115      +/-   ##
==========================================
+ Coverage   96.52%   96.53%   +0.01%     
==========================================
  Files          40       40              
  Lines        1843     1849       +6     
==========================================
+ Hits         1779     1785       +6     
  Misses         64       64              

Impacted Files	Coverage Δ
geostore/import_export/imports.py	95.40% <100.00%> (-0.11%)	⬇️
geostore/models.py	100.00% <100.00%> (ø)

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