update gradle and scala versions (#208)

diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index d7cc33f..58010f0 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -5,4 +5,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-bin.zip
diff --git a/settings.gradle b/settings.gradle
index 26c92f3..85b3e5b 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -24,6 +24,6 @@
 ]
 
 gradle.ext.scala = [
-    version: '2.12.7',
+    version: '2.12.8',
     compileFlags: ['-feature', '-unchecked', '-deprecation', '-Xfatal-warnings', '-Ywarn-unused-import']
 ]