chore: upgrade electron => 4.2.8 (#995)

Summary:
- 10.11.0 the bundled Node.js version in electron
- Chromium version number 69.0.3497.128

BREAKING CHANGES:
- require minimum MacOs version 10.10 Yosemite

.nvmrc

@@ -1 +1 @@
-10.2.1
+10.11.0

.travis.yml

@@ -45,7 +45,6 @@ addons:
 
 install:
   - nvm install
-  - npm install -g npm@6.4.0
   - npm install
 
 before_script:

appveyor.yml

@@ -7,7 +7,7 @@ environment:
     secure: 3IebpEKmC39codi1wT6dXx8mql4/mCL1JzZ7lir7GQ5MWRnCxlED2OXbiKHHigDV
   CSC_LINK: c:\projects\uhk-agent\scripts\certs\windows-cert.p12
   matrix:
-    - nodejs_version: "10.2.1"
+    - nodejs_version: "10.11.0"
 
 cache:
   - node_modules -> package.json
@@ -24,7 +24,6 @@ install:
   - choco install chromium
   - set CI=true
   - set PATH=%APPDATA%\npm;%PATH%
-  - npm install -g npm@6.4.0
   - node -v
   - npm -v
   - appveyor-retry npm install

package-lock.json

@@ -7114,14 +7114,22 @@
       "dev": true
     },
     "electron": {
-      "version": "3.1.10",
-      "resolved": "https://registry.npmjs.org/electron/-/electron-3.1.10.tgz",
-      "integrity": "sha512-IORdmdD5gWHmp3ffa+ZRD9kESJwdmQz8carDTeza6+W76dG447AUn7GmKk4cun31bLYTKb56D8pPhxa9S7kOZQ==",
+      "version": "4.2.8",
+      "resolved": "https://registry.npmjs.org/electron/-/electron-4.2.8.tgz",
+      "integrity": "sha512-/D9zfs+EWLN4yLV7tu2kWyXUnZQ3CKG1cmWbXeSFXF+0dNXQ8iFpY49dqZRoHGIBImFfp2x4N3Zc5Tu7rw3PJw==",
       "dev": true,
       "requires": {
-        "@types/node": "^8.0.24",
+        "@types/node": "^10.12.18",
         "electron-download": "^4.1.0",
         "extract-zip": "^1.0.3"
+      },
+      "dependencies": {
+        "@types/node": {
+          "version": "10.14.13",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-10.14.13.tgz",
+          "integrity": "sha512-yN/FNNW1UYsRR1wwAoyOwqvDuLDtVXnaJTZ898XIw/Q5cCaeVAlVwvsmXLX5PuiScBYwZsZU4JYSHB3TvfdwvQ==",
+          "dev": true
+        }
       }
     },
     "electron-builder": {
@@ -7520,9 +7528,9 @@
           }
         },
         "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
           "dev": true
         },
         "path-exists": {

package.json

@@ -44,7 +44,7 @@
     "decompress": "4.2.0",
     "decompress-tarbz2": "4.1.1",
     "devtron": "1.4.0",
-    "electron": "3.1.10",
+    "electron": "4.2.8",
     "electron-builder": "20.34.0",
     "electron-debug": "1.5.0",
     "electron-devtools-installer": "2.2.3",