bump scala version. tweak code to be more compatible. document build.sbt

.travis.yml

@@ -3,7 +3,7 @@ language: scala
 dist: trusty
 
 scala:
-  - 2.12.8
+  - 2.12.10
   - 2.13.1
 
 script:

benchmarks/src/main/scala/parseback/benchmarks/ArithmeticBenchmark.scala

@@ -122,7 +122,7 @@ class ArithmeticBenchmarks {
     val sizes = List(2, 4, 8, 16, 32, 64, 128)
 
     import scala.collection.compat._
-    sizes.view.map({ i => i -> inner(i) }).to(Map)
+    sizes.view.map({ i => i -> inner(i) }).toMap
   }
 
   @Benchmark

build.sbt

@@ -45,6 +45,7 @@ lazy val benchmarks = project
       // Scala's own Parser combinators
       "org.scala-lang.modules" %% "scala-parser-combinators" % "1.1.2",
 
+      // Warning: This compat module only works with scala 2.13
       "org.scala-lang.modules" %%% "scala-collection-compat" % "2.1.3"),
 
     sourceDirectory in Jmh := (sourceDirectory in Compile).value)