diff --git a/.gitignore b/.gitignore
index 09b993d..5785fdb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,17 @@
+
 *.iml
+.idea/libraries
+.idea/misc.xml
+.idea/modules.xml
+.idea/runConfigurations.xml
+.idea/vcs.xml
+.idea/workspace.xml
+.idea/caches/build_file_checksums.ser
+.idea/gradle.xml
+
+
 .gradle
 /local.properties
-/.idea
 .DS_Store
 /build
 /captures
diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
new file mode 100644
index 0000000..30aa626
--- /dev/null
+++ b/.idea/codeStyles/Project.xml
@@ -0,0 +1,29 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <Objective-C-extensions>
+      <file>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Import" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Macro" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Typedef" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Enum" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Constant" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Global" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Struct" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="FunctionPredecl" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Function" />
+      </file>
+      <class>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Property" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Synthesize" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InitMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="StaticMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InstanceMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="DeallocMethod" />
+      </class>
+      <extensions>
+        <pair source="cpp" header="h" fileNamingConvention="NONE" />
+        <pair source="c" header="h" fileNamingConvention="NONE" />
+      </extensions>
+    </Objective-C-extensions>
+  </code_scheme>
+</component>
\ No newline at end of file
diff --git a/.idea/codeStyles/codeStyleConfig.xml b/.idea/codeStyles/codeStyleConfig.xml
new file mode 100644
index 0000000..a55e7a1
--- /dev/null
+++ b/.idea/codeStyles/codeStyleConfig.xml
@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  </state>
+</component>
\ No newline at end of file
diff --git a/app/src/main/java/de/tobiasschuerg/weekview/sample/SampleActivity.kt b/app/src/main/java/de/tobiasschuerg/weekview/sample/SampleActivity.kt
index 3d86911..e5bfc3a 100644
--- a/app/src/main/java/de/tobiasschuerg/weekview/sample/SampleActivity.kt
+++ b/app/src/main/java/de/tobiasschuerg/weekview/sample/SampleActivity.kt
@@ -14,11 +14,11 @@ import de.tobiasschuerg.weekview.data.Event
 import de.tobiasschuerg.weekview.data.EventConfig
 import de.tobiasschuerg.weekview.data.WeekData
 import de.tobiasschuerg.weekview.view.EventView
-import kotlinx.android.synthetic.main.activity_sample.*
+import kotlinx.android.synthetic.main.activity_sample.week_view_foo
 import org.threeten.bp.DayOfWeek
 import org.threeten.bp.LocalDate
 import org.threeten.bp.LocalTime
-import java.util.*
+import java.util.Random
 import kotlin.math.absoluteValue
 
 class SampleActivity : AppCompatActivity() {
@@ -30,7 +30,6 @@ class SampleActivity : AppCompatActivity() {
     private val minEventLength = 30
     private val maxEventLength = 90
 
-
     private val data: WeekData by lazy {
         WeekData().apply {
             var startTime: LocalTime
diff --git a/library/build.gradle b/library/build.gradle
index 4b2c020..def9d95 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -10,8 +10,8 @@ android {
     defaultConfig {
         minSdkVersion 16
         targetSdkVersion 28
-        versionCode 3
-        versionName "1.4.0"
+        versionCode 4
+        versionName "1.4.1"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
diff --git a/library/src/main/java/de/tobiasschuerg/weekview/data/Event.kt b/library/src/main/java/de/tobiasschuerg/weekview/data/Event.kt
index 591a262..aa52d90 100644
--- a/library/src/main/java/de/tobiasschuerg/weekview/data/Event.kt
+++ b/library/src/main/java/de/tobiasschuerg/weekview/data/Event.kt
@@ -13,21 +13,21 @@ sealed class Event {
     abstract val shortTitle: String
 
     data class Single(
-            override val id: Long,
-            override val date: LocalDate,
-            override val title: String,
-            override val shortTitle: String,
-            val subTitle: String?,
+        override val id: Long,
+        override val date: LocalDate,
+        override val title: String,
+        override val shortTitle: String,
+        val subTitle: String?,
 
-            val day: DayOfWeek,
-            val startTime: LocalTime,
-            val endTime: LocalTime,
+        val day: DayOfWeek,
+        val startTime: LocalTime,
+        val endTime: LocalTime,
 
-            val upperText: String?,
-            val lowerText: String?,
+        val upperText: String?,
+        val lowerText: String?,
 
-            val textColor: Int,
-            val backgroundColor: Int
+        val textColor: Int,
+        val backgroundColor: Int
     ) : Event() {
         val duration: Duration = Duration.between(startTime, endTime)
     }
diff --git a/library/src/main/java/de/tobiasschuerg/weekview/util/DayOfWeekUtil.kt b/library/src/main/java/de/tobiasschuerg/weekview/util/DayOfWeekUtil.kt
index d9d7f7a..8d8b55d 100644
--- a/library/src/main/java/de/tobiasschuerg/weekview/util/DayOfWeekUtil.kt
+++ b/library/src/main/java/de/tobiasschuerg/weekview/util/DayOfWeekUtil.kt
@@ -2,7 +2,7 @@ package de.tobiasschuerg.weekview.util
 
 import org.threeten.bp.DayOfWeek
 import org.threeten.bp.temporal.WeekFields
-import java.util.*
+import java.util.Locale
 
 internal object DayOfWeekUtil {
 
@@ -84,5 +84,4 @@ internal object DayOfWeekUtil {
             else -> throw IllegalStateException("$firstDayOfTheWeek das is not supported as start day")
         }
     }
-
 }
\ No newline at end of file
diff --git a/library/src/main/java/de/tobiasschuerg/weekview/view/EventView.kt b/library/src/main/java/de/tobiasschuerg/weekview/view/EventView.kt
index 068598a..4326b4a 100644
--- a/library/src/main/java/de/tobiasschuerg/weekview/view/EventView.kt
+++ b/library/src/main/java/de/tobiasschuerg/weekview/view/EventView.kt
@@ -24,10 +24,10 @@ import de.tobiasschuerg.weekview.util.toLocalString
 /** this view is only constructed during runtime. */
 @SuppressLint("ViewConstructor")
 class EventView(
-        context: Context,
-        val event: Event.Single,
-        val config: EventConfig,
-        var scalingFactor: Float = 1f
+    context: Context,
+    val event: Event.Single,
+    val config: EventConfig,
+    var scalingFactor: Float = 1f
 
 ) : View(context) {
 
diff --git a/library/src/main/java/de/tobiasschuerg/weekview/view/WeekBackgroundView.kt b/library/src/main/java/de/tobiasschuerg/weekview/view/WeekBackgroundView.kt
index 84fb31d..d90a5e3 100644
--- a/library/src/main/java/de/tobiasschuerg/weekview/view/WeekBackgroundView.kt
+++ b/library/src/main/java/de/tobiasschuerg/weekview/view/WeekBackgroundView.kt
@@ -17,7 +17,7 @@ import org.threeten.bp.LocalTime
 import org.threeten.bp.format.TextStyle
 import org.threeten.bp.temporal.ChronoUnit
 import org.threeten.bp.temporal.WeekFields
-import java.util.*
+import java.util.Locale
 import kotlin.math.roundToInt
 
 internal class WeekBackgroundView constructor(context: Context) : View(context) {
diff --git a/library/src/main/java/de/tobiasschuerg/weekview/view/WeekView.kt b/library/src/main/java/de/tobiasschuerg/weekview/view/WeekView.kt
index 376dd62..7a27c82 100644
--- a/library/src/main/java/de/tobiasschuerg/weekview/view/WeekView.kt
+++ b/library/src/main/java/de/tobiasschuerg/weekview/view/WeekView.kt
@@ -21,7 +21,7 @@ import org.threeten.bp.DayOfWeek
 import org.threeten.bp.Duration
 import org.threeten.bp.LocalDate
 import org.threeten.bp.LocalTime
-import java.util.*
+import java.util.ArrayList
 import kotlin.math.roundToInt
 
 class WeekView(context: Context, attributeSet: AttributeSet) : RelativeLayout(context, attributeSet) {
diff --git a/library/src/test/java/de/tobiasschuerg/weekview/util/DayOfWeekUtilTest.kt b/library/src/test/java/de/tobiasschuerg/weekview/util/DayOfWeekUtilTest.kt
index 7b9d719..beb4701 100644
--- a/library/src/test/java/de/tobiasschuerg/weekview/util/DayOfWeekUtilTest.kt
+++ b/library/src/test/java/de/tobiasschuerg/weekview/util/DayOfWeekUtilTest.kt
@@ -3,7 +3,7 @@ package de.tobiasschuerg.weekview.util
 import org.junit.Assert.assertEquals
 import org.junit.Test
 import org.threeten.bp.DayOfWeek
-import java.util.*
+import java.util.Locale
 
 class DayOfWeekUtilTest {