Refactor latitude and longitude to decimals

[loevgaard]

Fixes #48

[codecov]

Codecov Report

Merging #57 (162f0bf) into master (2798763) will decrease coverage by 0.04%.
The diff coverage is 0.00%.

❗ Current head 162f0bf differs from pull request most recent head afcdc7f. Consider uploading reports for the commit afcdc7f to get more accurate results

@@             Coverage Diff              @@
##             master      #57      +/-   ##
============================================
- Coverage     16.07%   16.03%   -0.05%     
  Complexity      236      236              
============================================
  Files            37       37              
  Lines           784      786       +2     
============================================
  Hits            126      126              
- Misses          658      660       +2     

Impacted Files	Coverage Δ
src/Model/PickupPoint.php	29.26% <0.00%> (-1.51%)	⬇️
src/Provider/FakerProvider.php	20.00% <0.00%> (ø)
src/Provider/GlsProvider.php	0.00% <0.00%> (ø)
src/Provider/PostNordProvider.php	0.00% <0.00%> (ø)

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