Playists, looping, shuffling for Android and web

pubspec.lock

@@ -36,6 +36,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.14.12"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.5"
   fake_async:
     dependency: transitive
     description:
@@ -195,7 +209,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.15"
+    version: "0.2.16"
   typed_data:
     dependency: transitive
     description:
@@ -203,6 +217,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.6"
+  uuid:
+    dependency: "direct main"
+    description:
+      name: uuid
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.0"
   vector_math:
     dependency: transitive
     description:
@@ -218,5 +239,5 @@ packages:
     source: hosted
     version: "0.1.0"
 sdks:
-  dart: ">=2.6.0 <3.0.0"
+  dart: ">=2.7.0 <3.0.0"
   flutter: ">=1.12.13+hotfix.5 <2.0.0"