diff --git a/example/pubspec.lock b/example/pubspec.lock
index f2b2bae..294fde2 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -1,69 +1,62 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.11"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "2.4.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "2.0.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.2"
+    version: "1.1.3"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
-  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: "2.1.3"
+    version: "1.14.12"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2"
+    version: "0.1.3"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.1.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -79,13 +72,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  image:
+  intl:
     dependency: transitive
     description:
-      name: image
+      name: intl
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.4"
+    version: "0.16.1"
   just_audio:
     dependency: "direct dev"
     description:
@@ -113,28 +106,35 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.4"
+    version: "1.7.0"
   path_provider:
     dependency: transitive
     description:
       name: path_provider
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.1"
-  pedantic:
+    version: "1.6.10"
+  path_provider_linux:
     dependency: transitive
     description:
-      name: pedantic
+      name: path_provider_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0+1"
-  petitparser:
+    version: "0.0.1+1"
+  path_provider_macos:
     dependency: transitive
     description:
-      name: petitparser
+      name: path_provider_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "0.0.4+3"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
   platform:
     dependency: transitive
     description:
@@ -142,13 +142,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.1"
-  quiver:
+  plugin_platform_interface:
     dependency: transitive
     description:
-      name: quiver
+      name: plugin_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.5"
+    version: "1.0.2"
+  process:
+    dependency: transitive
+    description:
+      name: process
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.13"
   rxdart:
     dependency: "direct main"
     description:
@@ -167,7 +174,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.7.0"
   stack_trace:
     dependency: transitive
     description:
@@ -202,7 +209,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.11"
+    version: "0.2.15"
   typed_data:
     dependency: transitive
     description:
@@ -217,13 +224,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.8"
-  xml:
+  xdg_directories:
     dependency: transitive
     description:
-      name: xml
+      name: xdg_directories
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.5.0"
+    version: "0.1.0"
 sdks:
   dart: ">=2.6.0 <3.0.0"
-  flutter: ">=1.12.8 <2.0.0"
+  flutter: ">=1.12.13+hotfix.5 <2.0.0"
diff --git a/pubspec.lock b/pubspec.lock
index cdc912d..9bda4b9 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,62 +1,55 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.11"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.5.2"
   async:
     dependency: "direct main"
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "2.4.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "2.0.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.2"
+    version: "1.1.3"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
-  convert:
+    version: "1.14.12"
+  fake_async:
     dependency: transitive
     description:
-      name: convert
+      name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
-  crypto:
+    version: "1.1.0"
+  file:
     dependency: transitive
     description:
-      name: crypto
+      name: file
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "5.1.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -72,13 +65,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  image:
+  intl:
     dependency: transitive
     description:
-      name: image
+      name: intl
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.4"
+    version: "0.16.1"
   matcher:
     dependency: transitive
     description:
@@ -99,28 +92,35 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.4"
+    version: "1.7.0"
   path_provider:
     dependency: "direct main"
     description:
       name: path_provider
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.1"
-  pedantic:
+    version: "1.6.10"
+  path_provider_linux:
     dependency: transitive
     description:
-      name: pedantic
+      name: path_provider_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0+1"
-  petitparser:
+    version: "0.0.1+1"
+  path_provider_macos:
     dependency: transitive
     description:
-      name: petitparser
+      name: path_provider_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "0.0.4+3"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
   platform:
     dependency: transitive
     description:
@@ -128,13 +128,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.1"
-  quiver:
+  plugin_platform_interface:
     dependency: transitive
     description:
-      name: quiver
+      name: plugin_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.5"
+    version: "1.0.2"
+  process:
+    dependency: transitive
+    description:
+      name: process
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.13"
   rxdart:
     dependency: "direct main"
     description:
@@ -153,7 +160,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.7.0"
   stack_trace:
     dependency: transitive
     description:
@@ -188,7 +195,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.11"
+    version: "0.2.15"
   typed_data:
     dependency: transitive
     description:
@@ -203,13 +210,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.8"
-  xml:
+  xdg_directories:
     dependency: transitive
     description:
-      name: xml
+      name: xdg_directories
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.5.0"
+    version: "0.1.0"
 sdks:
   dart: ">=2.6.0 <3.0.0"
-  flutter: ">=1.12.8 <2.0.0"
+  flutter: ">=1.12.13+hotfix.5 <2.0.0"