Use scala 2.13.0 in Travis

SIkebe · SIkebe · commit 80c1c3ac38fc · 2019-08-08T01:39:04.000+09:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: scala
 scala:
-  - 2.12.1
+  - 2.13.0
 jdk:
   - oraclejdk8
 env:

-Original file line number
+Diff line change
@@ @@ -1,6 +1,6 @@ @@
 language: scala
 scala:
 -  - 2.12.1
 +  - 2.13.0
 jdk:
   - oraclejdk8
 env: