update commons to 3.7.6

app/build.gradle

@@ -4,7 +4,6 @@ apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 27
-    buildToolsVersion '27.0.2'
 
     defaultConfig {
         applicationId "com.simplemobiletools.calculator"
@@ -40,7 +39,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:3.3.12'
+    implementation 'com.simplemobiletools:commons:3.7.6'
     implementation 'me.grantland:autofittextview:0.2.1'
 
     testImplementation 'junit:junit:4.12'

app/src/main/res/drawable/button_pressed.xml

@@ -2,5 +2,5 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
        android:shape="rectangle">
     <solid
-        android:color="@color/dark_grey_pressed_mask"/>
+        android:color="@color/pressed_item_foreground"/>
 </shape>

app/src/main/res/values/colors.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="dark_grey_pressed_mask">#11000000</color>
+
 </resources>