Updates dependencies.

dependencies.gradle

 ext {
     versions = [
+            // For project configuration
             java                  : JavaVersion.VERSION_1_8,
             compileSdk            : 28,
             targetSdk             : 28,
             minSdk                : 21,
             buildTools            : '28.0.0-rc2',
+            dokka                 : '0.9.16',
+
+            // For app
             kotlin                : '1.2.51',
             coroutine             : '0.23.1',
-            dokka                 : '0.9.16',
 
-            // Main dependencies
-            appCompat             : '1.0.0-alpha1',
-            recyclerview          : '1.0.0-alpha1',
-            material              : '1.0.0-alpha1',
-            cardview              : '1.0.0-alpha1',
-            browser               : '1.0.0-alpha1',
-            constraintLayout      : '1.1.0',
-            androidKtx            : '1.0.0-alpha1',
+            appCompat             : '1.0.0-beta01',
+            recyclerview          : '1.0.0-beta01',
+            constraintLayout      : '2.0.0-alpha1',
+            cardview              : '1.0.0-beta01',
+            browser               : '1.0.0-beta01',
+            androidKtx            : '1.0.0-beta01',
+
             dagger                : '2.16',
-            exoPlayer             : '2.6.0',
-            playServices          : '15.0.0',
             firebase              : '15.0.0',
+            playServices          : '15.0.0',
+            exoPlayer             : '2.6.0',
+            flexbox               : '0.3.2',
+            material              : '1.0.0-alpha1',
+
             room                  : '2.0.0-alpha1',
             lifecycle             : '2.0.0-beta01',
+
             rxKotlin              : '2.2.0',
             rxAndroid             : '2.0.2',
+
             moshi                 : '1.6.0',
             okhttp                : '3.10.0',
+
             timber                : '4.7.0',
             threeTenABP           : '1.0.5',
             rxBinding             : '2.0.0',
+
             fresco                : '1.9.0',
+
             kotshi                : '1.0.2',
+
             frescoImageViewer     : '0.5.1',
+
             markwon               : '1.0.3',
+
             aVLoadingIndicatorView: '2.1.3',
-            flexbox               : '0.3.2',
+
+            // For wearable
+            wear                  : '2.3.0',
+            playServicesWearable  : '15.0.1',
+            supportWearable       : '26.1.0',
 
             // For testing
             junit                 : '4.12',
             truth                 : '0.36',
             espresso              : '3.1.0-alpha2',
-            mockito               : '2.10.0',
-
-            //For wearable
-            wear                  : '2.3.0',
-            playServicesWearable  : '15.0.1',
-            supportWearable       : '26.1.0'
+            mockito               : '2.10.0'
     ]
     libraries = [
             kotlin                : "org.jetbrains.kotlin:kotlin-stdlib-jre8:${versions.kotlin}",
@@ -55,12 +67,9 @@ ext {
 
             appCompat             : "androidx.appcompat:appcompat:${versions.appCompat}",
             recyclerview          : "androidx.recyclerview:recyclerview:${versions.recyclerview}",
-            material              : "com.google.android.material:material:${versions.material}",
             constraintlayout      : "androidx.constraintlayout:constraintlayout:${versions.constraintLayout}",
             cardview              : "androidx.cardview:cardview:${versions.cardview}",
-            flexbox               : "com.google.android:flexbox:${versions.flexbox}",
             browser               : "androidx.browser:browser:${versions.browser}",
-
             androidKtx            : "androidx.core:core-ktx:${versions.androidKtx}",
 
             dagger                : "com.google.dagger:dagger:${versions.dagger}",
@@ -70,6 +79,8 @@ ext {
             fcm                   : "com.google.firebase:firebase-messaging:${versions.firebase}",
             playServicesAuth      : "com.google.android.gms:play-services-auth:${versions.playServices}",
             exoPlayer             : "com.google.android.exoplayer:exoplayer:${versions.exoPlayer}",
+            flexbox               : "com.google.android:flexbox:${versions.flexbox}",
+            material              : "com.google.android.material:material:${versions.material}",
 
             room                  : "androidx.room:room-runtime:${versions.room}",
             roomProcessor         : "androidx.room:room-compiler:${versions.room}",
@@ -103,7 +114,7 @@ ext {
 
             aVLoadingIndicatorView: "com.wang.avi:library:${versions.aVLoadingIndicatorView}",
 
-            //For the wear app
+            // For wearable
             wearable              : "com.google.android.support:wearable:${versions.wear}",
             playServicesWearable  : "com.google.android.gms:play-services-wearable:${versions.playServicesWearable}",
             percentLayout         : "com.android.support:percent:${versions.supportWearable}",