Bump babel-preset-env from 1.6.1 to 1.7.0 (#9)

Bumps [babel-preset-env](https://github.com/babel/babel-preset-env) from 1.6.1 to 1.7.0.
- [Release notes](https://github.com/babel/babel-preset-env/releases)
- [Changelog](https://github.com/babel/babel-preset-env/blob/1.x/CHANGELOG.md)
- [Commits](babel/babel-preset-env@v1.6.1...v1.7.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

yarn.lock

@@ -704,8 +704,8 @@ babel-polyfill@^6.26.0:
     regenerator-runtime "^0.10.5"
 
 babel-preset-env@^1.6.1:
-  version "1.6.1"
-  resolved "https://registry.yarnpkg.com/babel-preset-env/-/babel-preset-env-1.6.1.tgz#a18b564cc9b9afdf4aae57ae3c1b0d99188e6f48"
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/babel-preset-env/-/babel-preset-env-1.7.0.tgz#dea79fa4ebeb883cd35dab07e260c1c9c04df77a"
   dependencies:
     babel-plugin-check-es2015-constants "^6.22.0"
     babel-plugin-syntax-trailing-function-commas "^6.22.0"
@@ -734,7 +734,7 @@ babel-preset-env@^1.6.1:
     babel-plugin-transform-es2015-unicode-regex "^6.22.0"
     babel-plugin-transform-exponentiation-operator "^6.22.0"
     babel-plugin-transform-regenerator "^6.22.0"
-    browserslist "^2.1.2"
+    browserslist "^3.2.6"
     invariant "^2.2.2"
     semver "^5.3.0"
 
@@ -886,12 +886,12 @@ browser-stdout@1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
 
-browserslist@^2.1.2:
-  version "2.11.3"
-  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-2.11.3.tgz#fe36167aed1bbcde4827ebfe71347a2cc70b99b2"
+browserslist@^3.2.6:
+  version "3.2.8"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-3.2.8.tgz#b0005361d6471f0f5952797a76fc985f1f978fc6"
   dependencies:
-    caniuse-lite "^1.0.30000792"
-    electron-to-chromium "^1.3.30"
+    caniuse-lite "^1.0.30000844"
+    electron-to-chromium "^1.3.47"
 
 builtin-modules@^1.0.0, builtin-modules@^1.1.1:
   version "1.1.1"
@@ -907,9 +907,9 @@ callsites@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
 
-caniuse-lite@^1.0.30000792:
-  version "1.0.30000792"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000792.tgz#d0cea981f8118f3961471afbb43c9a1e5bbf0332"
+caniuse-lite@^1.0.30000844:
+  version "1.0.30000905"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000905.tgz#8f731ecf5b8553c7154a691c3df3a635a1a3fda5"
 
 caseless@~0.12.0:
   version "0.12.0"
@@ -1179,9 +1179,9 @@ ecc-jsbn@~0.1.1:
   dependencies:
     jsbn "~0.1.0"
 
-electron-to-chromium@^1.3.30:
-  version "1.3.31"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.31.tgz#00d832cba9fe2358652b0c48a8816c8e3a037e9f"
+electron-to-chromium@^1.3.47:
+  version "1.3.83"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.83.tgz#74584eb0972bb6777811c5d68d988c722f5e6666"
 
 encoding@^0.1.11:
   version "0.1.12"