Render floating point numbers to string using Grisu2 algorithm instea…

…d of stdlib to speed up JSON generation.
Project-OSRM · Sep 5, 2018 · 3f5e961 · 3f5e961
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,7 @@
   - Changes from 5.18.0:
     - Optimizations:
       - CHANGED: Map matching is now almost twice as fast. [#5060](https://github.com/Project-OSRM/osrm-backend/pull/5060)
+      - CHANGED: Use Grisu2 for serializing floating point numbers. [5188](https://github.com/Project-OSRM/osrm-backend/pull/5188)
     - Bugfixes:
       - FIXED: collapsing of ExitRoundabout instructions [#5114](https://github.com/Project-OSRM/osrm-backend/issues/5114)
       - FIXED: negative distances in table plugin annotation [#5106](https://github.com/Project-OSRM/osrm-backend/issues/5106)