diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
deleted file mode 100644
index be7c7a1c..00000000
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <profile version="1.0">
-    <option name="myName" value="Project Default" />
-    <inspection_tool class="ForCanBeForeach" enabled="false" level="WARNING" enabled_by_default="false">
-      <option name="REPORT_INDEXED_LOOP" value="false" />
-      <option name="ignoreUntypedCollections" value="false" />
-    </inspection_tool>
-  </profile>
-</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 6d4e1750..b25be0f4 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -27,7 +27,7 @@
   <component name="ProjectPlainTextFileTypeManager">
     <file url="file://$PROJECT_DIR$/app/src/main/res/values-v21/bools.xml" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/app-release.apk b/app/app-release.apk
index 88774537..a1c23040 100644
Binary files a/app/app-release.apk and b/app/app-release.apk differ
diff --git a/build.gradle b/build.gradle
index 4783dde6..6d9f7f95 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-alpha2'
+        classpath 'com.android.tools.build:gradle:2.3.2'
     }
 }