diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file

diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/modules/kudens_test.iml b/.idea/modules/kudens_test.iml
index 04da892..35efbcf 100644
--- a/.idea/modules/kudens_test.iml
+++ b/.idea/modules/kudens_test.iml
@@ -5,7 +5,7 @@
       <configuration version="2" platform="JavaScript " useProjectSettings="false">
         <compilerSettings />
         <compilerArguments>
-          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/test/kudens_test.js" />
+          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/kotlin/test/kudens_test.js" />
           <option name="noStdlib" value="true" />
           <option name="sourceMapEmbedSources" value="inlining" />
           <option name="metaInfo" value="true" />

diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/modules/kudens_test.iml b/.idea/modules/kudens_test.iml
index 04da892..35efbcf 100644
--- a/.idea/modules/kudens_test.iml
+++ b/.idea/modules/kudens_test.iml
@@ -5,7 +5,7 @@
       <configuration version="2" platform="JavaScript " useProjectSettings="false">
         <compilerSettings />
         <compilerArguments>
-          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/test/kudens_test.js" />
+          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/kotlin/test/kudens_test.js" />
           <option name="noStdlib" value="true" />
           <option name="sourceMapEmbedSources" value="inlining" />
           <option name="metaInfo" value="true" />
diff --git a/build.gradle b/build.gradle
index adf57eb..a06c872 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@
 }
 
 buildscript {
-    ext.kotlin_version = '1.1.51'
+    ext.kotlin_version = '1.1.60'
     repositories {
         maven {
             url "http://nexus.astraeus.nl/nexus/content/groups/public"

diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/modules/kudens_test.iml b/.idea/modules/kudens_test.iml
index 04da892..35efbcf 100644
--- a/.idea/modules/kudens_test.iml
+++ b/.idea/modules/kudens_test.iml
@@ -5,7 +5,7 @@
       <configuration version="2" platform="JavaScript " useProjectSettings="false">
         <compilerSettings />
         <compilerArguments>
-          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/test/kudens_test.js" />
+          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/kotlin/test/kudens_test.js" />
           <option name="noStdlib" value="true" />
           <option name="sourceMapEmbedSources" value="inlining" />
           <option name="metaInfo" value="true" />
diff --git a/build.gradle b/build.gradle
index adf57eb..a06c872 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@
 }
 
 buildscript {
-    ext.kotlin_version = '1.1.51'
+    ext.kotlin_version = '1.1.60'
     repositories {
         maven {
             url "http://nexus.astraeus.nl/nexus/content/groups/public"
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 30d399d..3baa851 100644
--- a/gradle/wrapper/gradle-wrapper.jar
+++ b/gradle/wrapper/gradle-wrapper.jar
Binary files differ

diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/modules/kudens_test.iml b/.idea/modules/kudens_test.iml
index 04da892..35efbcf 100644
--- a/.idea/modules/kudens_test.iml
+++ b/.idea/modules/kudens_test.iml
@@ -5,7 +5,7 @@
       <configuration version="2" platform="JavaScript " useProjectSettings="false">
         <compilerSettings />
         <compilerArguments>
-          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/test/kudens_test.js" />
+          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/kotlin/test/kudens_test.js" />
           <option name="noStdlib" value="true" />
           <option name="sourceMapEmbedSources" value="inlining" />
           <option name="metaInfo" value="true" />
diff --git a/build.gradle b/build.gradle
index adf57eb..a06c872 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@
 }
 
 buildscript {
-    ext.kotlin_version = '1.1.51'
+    ext.kotlin_version = '1.1.60'
     repositories {
         maven {
             url "http://nexus.astraeus.nl/nexus/content/groups/public"
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 30d399d..3baa851 100644
--- a/gradle/wrapper/gradle-wrapper.jar
+++ b/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 39bba2b..7d040a2 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Jan 21 15:59:58 CET 2017
+#Wed Nov 15 16:26:00 CET 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3.1-bin.zip

diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/modules/kudens_test.iml b/.idea/modules/kudens_test.iml
index 04da892..35efbcf 100644
--- a/.idea/modules/kudens_test.iml
+++ b/.idea/modules/kudens_test.iml
@@ -5,7 +5,7 @@
       <configuration version="2" platform="JavaScript " useProjectSettings="false">
         <compilerSettings />
         <compilerArguments>
-          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/test/kudens_test.js" />
+          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/kotlin/test/kudens_test.js" />
           <option name="noStdlib" value="true" />
           <option name="sourceMapEmbedSources" value="inlining" />
           <option name="metaInfo" value="true" />
diff --git a/build.gradle b/build.gradle
index adf57eb..a06c872 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@
 }
 
 buildscript {
-    ext.kotlin_version = '1.1.51'
+    ext.kotlin_version = '1.1.60'
     repositories {
         maven {
             url "http://nexus.astraeus.nl/nexus/content/groups/public"
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 30d399d..3baa851 100644
--- a/gradle/wrapper/gradle-wrapper.jar
+++ b/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 39bba2b..7d040a2 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Jan 21 15:59:58 CET 2017
+#Wed Nov 15 16:26:00 CET 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3.1-bin.zip
diff --git a/gradlew b/gradlew
index 91a7e26..27309d9 100755
--- a/gradlew
+++ b/gradlew
@@ -6,12 +6,30 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
@@ -30,6 +48,7 @@
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`

diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
deleted file mode 100644
index b0f6971..0000000
--- a/.idea/libraries/Flutter_Plugins.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="libraryTable">
-  <library name="Flutter Plugins" type="FlutterPluginsLibraryType">
-    <CLASSES />
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
\ No newline at end of file
diff --git a/.idea/modules/kudens_test.iml b/.idea/modules/kudens_test.iml
index 04da892..35efbcf 100644
--- a/.idea/modules/kudens_test.iml
+++ b/.idea/modules/kudens_test.iml
@@ -5,7 +5,7 @@
       <configuration version="2" platform="JavaScript " useProjectSettings="false">
         <compilerSettings />
         <compilerArguments>
-          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/test/kudens_test.js" />
+          <option name="outputFile" value="$MODULE_DIR$/../../build/classes/kotlin/test/kudens_test.js" />
           <option name="noStdlib" value="true" />
           <option name="sourceMapEmbedSources" value="inlining" />
           <option name="metaInfo" value="true" />
diff --git a/build.gradle b/build.gradle
index adf57eb..a06c872 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@
 }
 
 buildscript {
-    ext.kotlin_version = '1.1.51'
+    ext.kotlin_version = '1.1.60'
     repositories {
         maven {
             url "http://nexus.astraeus.nl/nexus/content/groups/public"
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 30d399d..3baa851 100644
--- a/gradle/wrapper/gradle-wrapper.jar
+++ b/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 39bba2b..7d040a2 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Jan 21 15:59:58 CET 2017
+#Wed Nov 15 16:26:00 CET 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3.1-bin.zip
diff --git a/gradlew b/gradlew
index 91a7e26..27309d9 100755
--- a/gradlew
+++ b/gradlew
@@ -6,12 +6,30 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
@@ -30,6 +48,7 @@
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
diff --git a/gradlew.bat b/gradlew.bat
index 8a0b282..832fdb6 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
 set DIRNAME=%~dp0
 if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 
@@ -46,7 +46,7 @@
 goto fail
 
 :init
-@rem Get command-line arguments, handling Windowz variants
+@rem Get command-line arguments, handling Windows variants
 
 if not "%OS%" == "Windows_NT" goto win9xME_args
 if "%@eval[2+2]" == "4" goto 4NT_args