title: Issue Including Firestore In Flutter App
body: <p>I went through this codelab to integrate Google Firestore into my Flutter app but adding:</p>
  
  <pre><code>cloud_firestore: ^0.7.3
  </code></pre>
  
  <p>in my pubspec.yaml file breaks the app when I try to run it with</p>
  
  <pre><code>flutter run
  </code></pre>
  
  <p>The output of the error is:</p>
  
  <blockquote>
    <ul>
    <li>What went wrong:
    Execution failed for task ':app:processDebugManifest'.Manifest merger failed : Attribute meta-data#android.support.VERSION@value value=(25.4.0) from [com.android.support:appcompat-v7:25.4.0] AndroidManifest.xml:28:13-35
    is also present at [com.android.support:support-v4:26.1.0] AndroidManifest.xml:28:13-35 value=(26.1.0).
    Suggestion: add 'tools:replace="android:value"' to  element at AndroidManifest.xml:26:9-28:38 to override.</li>
    </ul>
  </blockquote>
  
  <p>My pubspec.yaml file dependencies are:</p>
  
  <pre><code>dependencies:
    flutter:
      sdk: flutter
    image_picker: 0.1.1
    google_sign_in: 0.3.1
    firebase_analytics: 0.0.4
    firebase_auth: 0.2.0
    firebase_database: 0.0.12
    firebase_storage: 0.0.5
    charts_flutter: "^0.2.0"
    cloud_firestore: "^0.7.3"
  </code></pre>
  
  <p>From some research, the issue seems to be something to do with SDK versions being incompatible. How do I go about debugging this issue?</p>