- npm upgrades for three.js, webpack and babel libraries

- favicons for webapp (android and apple)

images/favicon/favicon.svg

@@ -0,0 +1,14 @@
+<svg id="662299c0-7a48-11ea-bc55-0242ac130003" xmlns="http://www.w3.org/2000/svg" width="726" height="726" viewBox="0 0 727 727">
+    <title>
+        tethys
+    </title>
+    <path d="M 830.7 408 l 12.3 -74.3 L 689.1 301.1 l 6.3 -189.6 H 620 L 614.3 285.2 L 407 241.3 l 4.3 -129.8 H 336 L 332.2 225.5 L 180.8 193.4 l -12.3 74.3 l 161.2 34.2 l -4.9 147.4 L 151.3 412.5 l -12.3 74.3 L 322.2 525.6 l -6.1 183.4 h 75.3 l 5.6 -167.5 l 207.2 43.9 l -4.1 123.6 h 75.3 l 3.6 -107.8 l 122.2 25.9 l 12.3 -74.3 l -132 -28 l 4.9 -147.4 Z M 606.8 509 l -207.2 -43.9 l 4.9 -147.4 l 207.2 43.9 Z" transform="matrix(1,0,0,1,-139,-86.6)" fill="#3ad29f"/>
+    <polygon points="490,428.8 495.5,273.3 264.5,227 264.4,231.7 472.3,273.3 467,424.2 490,428.8" opacity="0.2"/>
+    <polygon points="496.7,201.5 502.5,24.8 481.7,24.8 476.1,197 496.7,201.5" opacity="0.2"/>
+    <polygon points="548.3,285.4 548.1,290.7 692.6,322 693.4,316.9 548.3,285.4" opacity="0.2"/>
+    <polygon points="212.7,140.4 216.5,25.5 195.7,25.5 192,136.1 212.7,140.4" opacity="0.2"/>
+    <polygon points="539.8,508.2 539.7,513.8 662.1,541.1 662.9,535.6 539.8,508.2" opacity="0.2"/>
+    <polygon points="257,450 256.4,455 465,499 462,621.5 485,621.5 489.6,494.4 255.8,451.7" opacity="0.2"/>
+    <polygon points="185.8,362.7 206.5,367.2 211.4,216.9 49.3,182.2 61.1,110.7 40.9,106.4 28.4,182.2 190.5,215 185.8,362.7" opacity="0.2"/>
+    <polygon points="20.8,400.8 32.4,330.7 12.3,326.5 0,400.8 183.2,439.6 177.1,623 197.9,623 204,439.6 20.8,400.8" opacity="0.2"/>
+</svg>

images/favicon/site.webmanifest

@@ -0,0 +1,19 @@
+{
+    "name": "",
+    "short_name": "",
+    "icons": [
+        {
+            "src": "/images/favicons/android-chrome-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "/images/favicons/android-chrome-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ],
+    "theme_color": "#646b63",
+    "background_color": "#646b63",
+    "display": "standalone"
+}