Fix #28 - update dependencies.

yarn.lock

@@ -103,23 +103,23 @@ text-encoding@^0.6.4:
   integrity sha1-45mpgiV6J22uQou5KEXLcb3CbRk=
 
 topojson-client@3, topojson-client@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/topojson-client/-/topojson-client-3.0.0.tgz#1f99293a77ef42a448d032a81aa982b73f360d2f"
-  integrity sha1-H5kpOnfvQqRI0DKoGqmCtz82DS8=
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/topojson-client/-/topojson-client-3.0.1.tgz#774c0343b44fc4ec29c3a2274d7a1a9c3b213cd9"
+  integrity sha512-rfGGzyqefpxOaxvV9OTF9t+1g+WhjGEbAIuCcmKYrQkxr0nttjMMyzZsK+NhLW4cTl2g1bz2jQczPUtEshpbVQ==
   dependencies:
     commander "2"
 
 topojson-server@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/topojson-server/-/topojson-server-3.0.0.tgz#378e78e87c3972a7b5be2c5d604369b6bae69c5e"
-  integrity sha1-N4546Hw5cqe1vixdYENptrrmnF4=
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/topojson-server/-/topojson-server-3.0.1.tgz#d2b3ec095b6732299be76a48406111b3201a34f5"
+  integrity sha512-/VS9j/ffKr2XAOjlZ9CgyyeLmgJ9dMwq6Y0YEON8O7p/tGGk+dCWnrE03zEdu7i4L7YsFZLEPZPzCvcB7lEEXw==
   dependencies:
     commander "2"
 
 topojson-simplify@^3.0.0:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/topojson-simplify/-/topojson-simplify-3.0.2.tgz#8a2403e639531500fafa0c6594e8b0fadebc2c02"
-  integrity sha512-gyYSVRt4jO/0RJXKZQPzTDQRWV+D/nOfiljNUv0HBXslFLtq3yxRHrl7jbrjdbda5Ytdr7M8BZUI4OxU7tnbRQ==
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/topojson-simplify/-/topojson-simplify-3.0.3.tgz#668de0ca7ab36797002087190c2222f938af2ab2"
+  integrity sha512-V+pBjLVzSQ3+hSOxBiV01OVXgFiCmMO8ia3huxKEyIMTC1ApQHBcdXdOqcQ6U2JJJD31TZduwY6KyF15R8sUgg==
   dependencies:
     commander "2"
     topojson-client "3"