Update CHANGELOG.md

CHANGELOG.md

@@ -1,4 +1,30 @@
 ## [Unreleased](https://github.com/gravitystorm/openstreetmap-carto/compare/v4.18.0...master)
+## Changes
+- Adding rendering for boundary=protected_area (#3509)
+- Nature reserve boundaries revision (#3574) 
+- Adding support of amenity=vending_machine (#3601)
+- Adding more barrier icons (#3602)
+- Changing allotments color and adding outline (#3625)
+- Reducing priority of tourism=attraction and rendering from z17 (#3603)
+- Changing tourism color to #660033 (#3582) 
+- Making country borders thicker at z8 and z9 (#3563)
+- Rendering parking from z14 (#3612)
+- Starting to render most patterns at z13 instead of z14 (#3610) 
+- Changing zoom level and text size for place=hamlet (#3626)
+- Rendering airport gate refs black instead of purple (#3620)
+- Updating zoom levels by height for masts, towers and telescopes (#3536)
+- Hiding underground parking (#3600)
+- Adjusting width of highway=construction (#3580)
+- Selecting only motorway_link to tertiary_link as link in SQL (#3567)
+- Adding tertiary-link width, same as other links (#3570)
+- Changing certain amenity icons to grey (#3586)
+- Converting springs to use ST_PointOnSurface and reformatting SQL (#3233)
+- Adding "religious-icon" as color variable for #000000 (#3642)
+- Adding "barrier-icon" color variable in #3f3f3f for barriers (#3643)
+- Fixing inconsistency of leisure=ice_rink (#3598)
+- Fixing label opacity for tourism features (#3616)
+- Reverting lowzoom nobuilding test change (#3622)
+- Removing trailing whitespace (#3637)
 
 ## [v4.18.0](https://github.com/gravitystorm/openstreetmap-carto/compare/v4.17.0...v4.18.0) - 2018-12-21
 ## Changes