Update to new Expo SDK

- removed native-base dependency

views/SettingsView.js

@@ -5,7 +5,6 @@ import {
   StatusBar,
   TextInput,
   Text,
-  Slider,
   Switch,
 } from "react-native";
 import themeColors from '../components/themeColors';
@@ -51,17 +50,20 @@ function SettingsSwitch(props) {
 }
 
 function SettingsSlider(props) {
+  /*
+    <Slider
+    value={props.value}
+    disabled={props.disabled}
+    thumbTintColor={themeColors["WET ASPHALT"]}
+    minimumTrackTintColor={themeColors["CLOUDS"]}
+    maximumTrackTintColor={themeColors["CLOUDS"]}
+    style={settingsGroupStyles.slider}
+  />
+  */
+
   return (
     <React.Fragment>
       <Text style={settingsGroupStyles.label}>{props.label}</Text>
-      <Slider
-        value={props.value}
-        disabled={props.disabled}
-        thumbTintColor={themeColors["WET ASPHALT"]}
-        minimumTrackTintColor={themeColors["CLOUDS"]}
-        maximumTrackTintColor={themeColors["CLOUDS"]}
-        style={settingsGroupStyles.slider}
-      />
     </React.Fragment>
   )
 }