Better form and remove squares

Signed-off-by: Nikolai Rodionov <allanger@posteo.de>

pubspec.lock

@@ -129,6 +129,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.2"
+  equatable:
+    dependency: transitive
+    description:
+      name: equatable
+      sha256: "3e0141505477fd8ad55d6eb4e7776d3fe8430be8e497ccb1521370c3f21a3e2b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.8"
   fake_async:
     dependency: transitive
     description:
@@ -544,6 +552,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.0"
+  pausable_timer:
+    dependency: transitive
+    description:
+      name: pausable_timer
+      sha256: "6ef1a95441ec3439de6fb63f39a011b67e693198e7dae14e20675c3c00e86074"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.0+3"
   platform:
     dependency: transitive
     description:
@@ -734,6 +750,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.6.17"
+  toastification:
+    dependency: "direct main"
+    description:
+      name: toastification
+      sha256: "66c96678e3dece8ba24de3ea31634bd65a80aaecb8105f9bafe946e5f0d7590a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.0"
   typed_data:
     dependency: transitive
     description:
@@ -742,6 +766,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.0"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      sha256: "1fef9e8e11e2991bb773070d4656b7bd5d850967a2456cfc83cf47925ba79489"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.5.3"
   vector_math:
     dependency: transitive
     description: