Update yarn.lock (#483)

e344c3c
switched from `point-geometry` to `@mapbox/point-geometry`, but it
didn't update yarn.lock accordingly. This does.

yarn.lock

@@ -2,6 +2,10 @@
 # yarn lockfile v1
 
 
+"@mapbox/point-geometry@^0.1.0":
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/@mapbox/point-geometry/-/point-geometry-0.1.0.tgz#8a83f9335c7860effa2eeeca254332aa0aeed8f2"
+
 abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
@@ -4033,10 +4037,6 @@ pluralize@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-1.2.1.tgz#d1a21483fd22bb41e58a12fa3421823140897c45"
 
-point-geometry@0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/point-geometry/-/point-geometry-0.0.0.tgz#6fcbcad7a803b6418247dd6e49c2853c584daff7"
-
 postcss-calc@^5.2.0:
   version "5.3.1"
   resolved "https://registry.yarnpkg.com/postcss-calc/-/postcss-calc-5.3.1.tgz#77bae7ca928ad85716e2fda42f261bf7c1d65b5e"