Add .pubignore file and update CHANGELOG for version 2.0.0

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

example/.metadata

@@ -1,30 +0,0 @@
-# This file tracks properties of this Flutter project.
-# Used by Flutter tool to assess capabilities and perform upgrades etc.
-#
-# This file should be version controlled and should not be manually edited.
-
-version:
-  revision: "2663184aa79047d0a33a14a3b607954f8fdd8730"
-  channel: "stable"
-
-project_type: app
-
-# Tracks metadata for the flutter migrate command
-migration:
-  platforms:
-    - platform: root
-      create_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
-      base_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
-    - platform: web
-      create_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
-      base_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
-
-  # User provided section
-
-  # List of Local paths (relative to this file) that should be
-  # ignored by the migrate tool.
-  #
-  # Files that are not part of the templates will be ignored by default.
-  unmanaged_files:
-    - 'lib/main.dart'
-    - 'ios/Runner.xcodeproj/project.pbxproj'

example/.vscode/launch.json

@@ -1,25 +0,0 @@
-{
-  // Use IntelliSense to learn about possible attributes.
-  // Hover to view descriptions of existing attributes.
-  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-  "version": "0.2.0",
-  "configurations": [
-    {
-      "name": "example",
-      "request": "launch",
-      "type": "dart"
-    },
-    {
-      "name": "example (profile mode)",
-      "request": "launch",
-      "type": "dart",
-      "flutterMode": "profile"
-    },
-    {
-      "name": "example (release mode)",
-      "request": "launch",
-      "type": "dart",
-      "flutterMode": "release"
-    }
-  ]
-}