Switched to package names as app ids (#69)

* Fixes #14 (although detection is disabled in background processes due to the bug described in #60)
    * Added App icons and basic installed detection
    * Real Package Names Used as IDs + App Icons (INCONVENIENT FOR PREVIOUS VERSION USERS)
    * Switch to using extracted names (no custom names)

* Fixes #57

* Fixes #67

* Fixes #64

* Fixes #61

* Commented out APKMirror and added code to remove their Apps

* Updated README

* Switched to Flutter stable (causes some UI elements to switch back to the old material design style, but this will be fixed in later Flutter releases)

* BG task silently retries on network errors

* Updated screenshots

pubspec.yaml

@@ -17,10 +17,10 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 0.5.10+31 # When changing this, update the tag in main() accordingly
+version: 0.6.0+44 # When changing this, update the tag in main() accordingly
 
 environment:
-  sdk: '>=2.19.0-79.0.dev <3.0.0'
+  sdk: '>=2.18.2 <3.0.0'
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions
@@ -49,11 +49,13 @@ dependencies:
   url_launcher: ^6.1.5
   permission_handler: ^10.0.0
   fluttertoast: ^8.0.9
-  device_info_plus: ^5.0.5
+  device_info_plus: ^8.0.0
   file_picker: ^5.1.0
   animations: ^2.0.4
   install_plugin_v2: ^1.0.0
-  share_plus: ^4.4.0
+  share_plus: ^6.0.1
+  installed_apps: ^1.3.1
+  package_archive_info: ^0.1.0
 
 
 dev_dependencies: